Dujiangyan Day Trip from Chengdu: 3-in-1 UNESCO Guide
Three landmarks within an hour of Chengdu — UNESCO water engineering still in use after 2,200 years, Sichuan's smaller-quieter panda base, and Daoism's birthplace at Mt Qingcheng. The full-day plan plus Trip.com vs DIY compared.
By TravelChina Editorial · Published · Updated
Dujiangyan is the most under-claimed full-day trip from Chengdu. While Mt Emei and Leshan get the bulk of foreign-traveler attention, Dujiangyan quietly stacks three internationally significant attractions within an hour of the city core — and the commercial-travel slot is genuinely unclaimed (Trip.com is not yet advertising on the keyword as of May 2026, which means foreigners searching “Dujiangyan” mostly land on Wikipedia, the UNESCO listing, or English-language travel blogs rather than booking pages).
What you get for one day: an active engineering project from 256 BC that still feeds the Chengdu Plain after 2,200+ years, the alternative Dujiangyan Panda Base (smaller and forested, with a foreigner-bookable volunteer day), and UNESCO Mt Qingcheng — the birthplace of Daoism in China. All three are inside a 25-kilometre triangle.
Easiest first-time route
Most foreign first-timers either book a Trip.com bundled day tour (hotel pickup, English guide, all three sites) or take the 35-50 minute HSR from Chengdu East and use a private taxi between the three sites (~¥150 split across the day).
Why Dujiangyan is the under-rated Chengdu day trip
The case for Dujiangyan, in three sentences: it is the only place on Earth where you can see a 2,200-year-old engineering project that is still doing its original job; you can pair that with a forested panda base where you actually have time to watch one animal for 15 minutes uninterrupted; and you can finish the day at the original mountain temple where Chinese Daoism was founded in 142 CE. The three sites are within a 25-kilometre triangle.
The under-rated part: the SERP for “dujiangyan” is dominated by Wikipedia, UNESCO, and a few English travel-blog posts — Trip.com is not advertising commercial CPC against the keyword, even though Dujiangyan is on every Sichuan travel itinerary. For travelers, that means lower competition for tour spots. For us, it means the keyword is genuinely useful long-tail, not crowded out by paid placements.
Quick verdict — who should do this day trip
Worth it for: travelers with a full day to spend out of Chengdu, history-curious visitors (the engineering story is one of the great Chinese science-history narratives), panda-base completionists who want a quieter alternative to the main Chengdu base, and anyone planning to do the volunteer-for-a-day panda program (which is only available at Dujiangyan, not the main base).
Skip if: you only have one full day in Chengdu and haven't done the main Chengdu Research Base of Giant Panda Breeding yet (that's the headline panda experience — see the panda base comparison guide); you have strict mobility limits (the irrigation system has stair-climbs to the Erwang Temple viewing platform, and Mt Qingcheng involves cable-car-plus-stair access); or you're visiting in mid-July through August during peak summer rain (the Min River runs muddy and Mt Qingcheng frequently sits in cloud).
Day plan: how to fit all 3 landmarks in 8 hours
Tested timeline. Tight but realistic — depends on Chengdu morning traffic and HSR booking timing.
| Time | Activity | Notes |
|---|---|---|
| 7:30am | Leave Chengdu hotel → Chengdu East metro | Allow 30 min to clear station security |
| 8:15am | HSR Chengdu East → Dujiangyan | ~35-50 min, ¥15-22 second class |
| 9:00am | Dujiangyan Irrigation System (Yuzui → Feishayan → Baopingkou) | 90 min walk-through, finish at Anlan Bridge |
| 11:00am | Taxi to Dujiangyan Panda Base / Panda Valley | ~20 min, ~¥40 by metered taxi |
| 11:30am | Dujiangyan Panda Base + lunch on-site | 90 min — pandas most active 11am-1pm in summer |
| 1:30pm | Taxi to Mt Qingcheng Front Mountain gate | ~25 min, ~¥50 |
| 2:00pm | Cable car up Mt Qingcheng (Front) | Cable car ¥60 round-trip — saves ~2 hrs vs hike |
| 4:30pm | Descend, taxi to Qingchengshan HSR station | ~10 min |
| 5:00pm | HSR Qingchengshan → Chengdu East | ~35 min, back in town for dinner by 6pm |
Two structural choices that matter. First, the cable car at Mt Qingcheng is non-negotiable for a same-day combo — without it the mountain eats 4 hours instead of 2.5. Second, you exit via the dedicated Qingchengshan HSR station, not back through Dujiangyan station. The line runs Chengdu East → Dujiangyan → Qingchengshan as a continuous spur, so you essentially traverse the route end-to-end without backtracking.
How to get there from Chengdu — 3 transport options
| Option | Cost | Time | Best for |
|---|---|---|---|
| HSR + on-site taxi | ~¥150-200 total/pp | 8 hrs | DIY budget + flexibility |
| Trip.com bundled day tour | USD $55-75/pp | 8-9 hrs | First-time foreigners |
| Private driver (full day) | ¥800-1,400/day | 8-10 hrs | Groups of 3-4 sharing cost |
Option A: HSR + on-site taxi (best DIY)
The cheapest and most flexible path. From Chengdu East (成都东站) or Chengdu North (成都北站) take a CRH/D-train to Dujiangyan (都江堰站). 35-50 minutes, ¥15-22 in second class, 30+ trains daily from 7:00am — this is one of the highest-frequency tourist routes in Sichuan. Book via the 12306 English app 15 days in advance for weekend slots; same-day availability is usually fine on weekdays.
From Dujiangyan station, public bus 4 (¥2) reaches the irrigation system entrance in 20 minutes. Taxi is faster (~¥20, 10 minutes). Between the three sites you take metered taxis (~¥40-50 each leg) or pre-arrange a half-day driver via Didi (滴滴) for ¥150-200 covering all three transfers. The Qingchengshan station is on the same HSR line for the return journey — no double-back required.
Option B: Trip.com bundled day tour
USD $55-75 per person, hotel pickup around 7:30am, return ~6pm. Includes round-trip transport, combined ticket (Dujiangyan + Mt Qingcheng), panda base entry, lunch, and a bilingual (Mandarin + English) guide. The guide context matters at the irrigation system more than at most attractions — the engineering story is genuinely complex (three components, four hydrological principles, 2,200 years of continuous adjustments) and signage is mostly Chinese-only on the system itself.
Compare ticket bundles and operator options on Trip.com: Dujiangyan listing on Trip.com. Most operators list a Mt-Qingcheng-included variant separately — confirm the panda base is bundled in (some tours quote a cheaper base price by dropping the panda visit).
Option C: Private driver / full-day car
¥800-1,400 for a 10-hour day with driver. Worth it for groups of 3-4 splitting the cost (≈¥250-350/pp), or travelers who want to add a Sichuan-style early lunch in old-town Dujiangyan (the Lidui Park district, near the Erwang Temple). Most Chengdu drivers don't speak English; book through your hotel concierge or via Trip.com's private-tour listings. The advantage over HSR-DIY is door-to-door service plus storage for camera gear and souvenirs; the disadvantage is rush-hour Chengdu traffic on the return leg can add 45-90 minutes.
What you'll see — UNESCO Dujiangyan Irrigation System
The headline experience and the under-rated one. Built in 256 BC by Qin-dynasty engineer Li Bing and his son, the Dujiangyan system has been operating continuously for 2,280+ years — making it the oldest functioning water-management installation on Earth. UNESCO inscribed it in 2000 jointly with Mt Qingcheng (listing ID 1001).
The system has three components, all visible from a single 90-minute walk along the inner river bank:
1. Yuzui (鱼嘴) — the “Fish Mouth” Levee
A long, slender island shaped like a fish's head that splits the Min River (岷江) into two channels. The outer channel (外江) carries floodwater downstream; the inner channel (内江) diverts irrigation water into the Chengdu Plain. The split ratio self-adjusts: in low water, ~60% goes to the inner channel for irrigation; in flood, the proportion inverts to send excess downstream — a hydrological principle the engineers called “ four-six watershed” (四六分水).
2. Feishayan (飞沙堰) — the Sand-Flying Spillway
A low overflow weir between the inner channel and the outer channel. When the inner channel hits a critical level, the spillway dumps excess flow plus suspended sand back into the outer channel — keeping the irrigation channel clear of silt. The principle: centrifugal force at the spillway curve concentrates heavier sediment on the outside of the bend, which is exactly where the spillway lip sits. After 2,200 years the system still doesn't need mechanical dredging.
3. Baopingkou (宝瓶口) — the “Bottle Neck”
The narrowest part — a 20-metre gap cut through Lidui (离堆) hill where the inner channel enters the Chengdu Plain. The narrow throat acts as a flow regulator: water that exceeds the hydraulic capacity of the gap automatically backs up to the Feishayan spillway and gets shed back to the outer river. Li Bing's crew cut Lidui by hand in the 3rd century BC using fire-and-water rock-cracking — eight years of labour for the single most important feature in the system.
Above the system, on the hillside, sits Erwang Temple (二王庙) — the temple to Li Bing and his son. About 380 stairs to climb; the view from the top frames the entire system in one composition. Anlan Bridge (安澜桥), the chain-and-plank suspension bridge across the inner channel, predates the modern era — the current bridge is a 1970s reconstruction of the Qing-dynasty original, but the design goes back to the Song.
Practical: Dujiangyan irrigation system is open 8am-6pm (last entry 5pm), entry ¥80. Allow 90 minutes minimum for the walking loop, 2.5 hours if you climb to Erwang Temple. Real-name (实名制) tickets — bring your passport. Cash, WeChat Pay, Alipay accepted; foreign-card POS hit-or-miss.
Dujiangyan Panda Base — the alternative panda experience
Officially the Dujiangyan Giant Panda Disease Control and Research Center, marketed as Panda Valley (熊猫谷). 30-50 pandas housed in forested semi-natural enclosures rather than the concrete-and-glass viewing pavilions of the main Chengdu Research Base. Most foreign travelers arrive expecting a smaller version of the main base; the actual experience is closer to a quiet wildlife park.
The case for going: fewer crowds (especially after 11am once Chengdu day-trippers leave), more time per panda (you can watch one animal for 15+ minutes uninterrupted, which is rare at the main base), and the volunteer-for-a-day program — the only one in the Chengdu region open to foreigners.
Practical: open 8:30am-5pm (last entry 4pm), entry ¥58. The base is split into a public viewing area (~2 hours to walk the main loop) and the volunteer/research zone, which is closed to general visitors. Photography is allowed; flash is restricted near the older pandas. The on-site canteen serves Sichuan basics for ¥40-60 per person — not gourmet but adequate, and saves the 25-minute taxi back to town.
For the broader panda comparison (main Chengdu base vs Dujiangyan base vs Bifengxia vs Wolong), see the dedicated panda-bases guide.
Book Dujiangyan Panda Base entry / volunteer slots
Trip.com lists both the standard entry ticket and the volunteer-for-a-day program (usually as a separate SKU at ¥850-1,000 — they handle the email exchange with the base office for you).
Volunteer for a day at Dujiangyan — how foreigners book it
The volunteer program is one of the few hands-on panda experiences still open to international visitors in 2026. The fundamentals: a single-day program (no overnight), ~¥700 ($100), 9:00am-3:30pm, groups of 6-12 with one keeper. You spend the day doing real husbandry tasks rather than zoo-visitor activities.
What the day looks like
- 9:00-9:30am — orientation video (English subtitles), uniform issue (a green vest you keep), passport check
- 9:30-11:00am — supervised feeding: you weigh and distribute bamboo, “panda cake” pellets, and apple/carrot slices for one assigned enclosure (typically 2-3 sub-adult pandas)
- 11:00-12:00pm — enclosure cleaning: you and one other volunteer rake out bamboo waste from the outdoor pen while the keeper holds the pandas in the indoor section
- 12:00-1:00pm — lunch in the staff canteen (Sichuan-style, included)
- 1:00-2:30pm — Q&A with a senior keeper (English interpretation provided), behaviour observation, optional second feeding round
- 2:30-3:00pm — posed photo with one of the older, calmer pandas (no touch — China banned hands-on panda contact for most international programs after 2018, the photo is at arm's length while the panda eats)
- 3:00-3:30pm — certificate (with your name + passport number on it), wrap-up
How to actually book it
Two paths. Direct: email the base office 2-3 weeks ahead with your full name, passport number, nationality, requested date, and group size. Spots are usually available except during Chinese Golden Weeks. The English booking interface is a single PDF form; the response time is 3-7 business days.
Via Trip.com / Klook: the marked-up SKU is ¥850-1,000 instead of ¥700 — they handle the email exchange and confirmation. Worth the ¥150-300 markup if your written Mandarin is zero. The same-day experience is identical (you arrive at the base directly, not via a tour bus).
Practical rules — closed-toe shoes mandatory, no jewellery, no bright nail polish or scented perfume (the base is strict; older pandas react to scent), and bring your passport (they record it for the certificate and the volunteer-day insurance). You cannot combine the volunteer day with the irrigation system + Mt Qingcheng — the volunteer day runs 9am-3:30pm and counts as a full Dujiangyan day on its own.
Mt Qingcheng — Daoism's birthplace
UNESCO inscribed Mt Qingcheng (青城山, “Green-City Mountain”) in 2000 as part of the same listing as the Dujiangyan irrigation system (joint ID 1001). The site is the founding mountain of Tianshi Daoism (天师道, “Way of the Celestial Masters”) — the religious tradition founded by Zhang Daoling at Tianshi Cave in 142 CE. Daoism as an organised religion (as opposed to philosophical Daoism, which predates this by 500+ years) traces directly to this mountain.
The mountain has two distinct halves:
Front Mountain (前山, Qiánshān) — the heritage side
The primary visitor experience. ¥80 entry, plus ~¥60 round-trip cable car (highly recommended for a day-combo itinerary). The route: enter through Jianfu Palace (建福宫, late Tang foundation, current buildings Qing reconstruction), walk 15-20 minutes to the Yuecheng Lake ferry, cross the lake (5 min, included), then ride the cable car up to the upper temple terraces. From the cable car top station it's a 30-minute walk to Shangqing Palace (上清宫) at the summit, passing Tianshi Cave (天师洞) on the way. Allow 2-3 hours total with cable car; 5-6 hours if you skip the cable car.
Back Mountain (后山, Hòushān) — the wild side
A separate ¥20-entry scenic area accessed from a different gate. Waterfalls, longer hikes, fewer temples, almost no foreigners. Beautiful but a separate half-day — not combinable with the irrigation system in a single 8-hour window. Save Back Mountain for an overnight Mt Qingcheng visit if you have one; there are several Daoist hermitage guesthouses (~¥200/night) on the back-mountain trail.
Practical: Mt Qingcheng Front Mountain is open 8am-5pm (last cable car up at 4pm). Cable car runs continuously in fair weather; closed for high winds or icing (winter). Bring a windbreaker — the upper terraces are 8-10°C cooler than Chengdu year-round. Photography is best in late afternoon when the western light hits the temple roofs; morning is often misty until 10-11am.
Mt Qingcheng tickets & combo
Trip.com lists the Mt Qingcheng entry plus cable car combinations. The Dujiangyan + Qingcheng combined ticket (¥130) is sold at either site's entrance — buy it at whichever you visit first.
Tickets, combo deals, and foreign-payment reality
| Item | Price (¥) | Notes |
|---|---|---|
| Dujiangyan irrigation system | 80 | 8am-6pm, real-name (passport required) |
| Dujiangyan Panda Base | 58 | 8:30am-5pm, separate from the combo |
| Dujiangyan volunteer-for-a-day | ~700 | Email-booked direct or ¥850-1,000 via Trip.com/Klook |
| Mt Qingcheng Front Mountain | 80 | 8am-5pm, last cable car 4pm |
| Mt Qingcheng Back Mountain | 20 | Separate gate — not combinable in one day |
| Mt Qingcheng cable car (round trip) | ~60 | Mandatory for the same-day combo schedule |
| Combined: Dujiangyan + Qingcheng front | 130 | Saves ¥30, valid 2 days, panda base NOT included |
Payment reality for foreign travelers: ticket windows accept cash, WeChat Pay, and Alipay. Foreign-card POS machines exist on paper but fail roughly half the time — especially at the Mt Qingcheng cable car ticket window during peak season. Carry RMB 500 cash per person as backup. The Chengdu metro and HSR ticket machines accept contactless Visa/Mastercard reliably; the irrigation system ticket window does not.
When to visit (and when to skip)
Best windows
- Late March to early May — cherry blossoms at the irrigation system, mild temperatures (15-22°C), pre-summer rain
- Mid-September to late October — post-monsoon clarity, comfortable 18-25°C, autumn light on Mt Qingcheng temple roofs. Avoid October 1-7 Golden Week
- April 5 (Qingming Water-Releasing Festival) — the 2,000-year-old ceremony where the wooden cofferdams at Yuzui levee are ritually broken. Genuinely cinematic but expect 30,000+ visitors in one day
When to skip
- Mid-July to late August — peak summer rain; the Min River runs muddy and Mt Qingcheng frequently sits in cloud
- Spring Festival week (Feb 16-22, 2026) — domestic crowds make the panda base unworkable
- May 1-5 Labour Day Golden Week
- October 1-7 National Day Golden Week
- Single-day Chengdu trip — Dujiangyan eats your day; skip in favor of the main Chengdu Research Base if you only have one
The drainage window — a niche pick
From mid-November to early April, the inner channel runs at low water; you can walk down onto exposed parts of the river bed and see structural details (the iron-cramped stone foundations, the wooden cofferdam slots) that are underwater the rest of the year. For history travellers this is the better season — fewer crowds, more visible engineering. Trade-off: cold (5-10°C in the canyon) and Mt Qingcheng often ices on the upper terraces, which can close the cable car.
Combining with Chengdu's other UNESCO day trips
Chengdu has the densest cluster of UNESCO World Heritage day trips in inland China: Dujiangyan + Mt Qingcheng (joint listing, ID 1001), Leshan Giant Buddha (ID 779, joint with Mt Emei), and Mt Emei (also ID 779). All three are doable from Chengdu in a single 5-day Sichuan trip.
The natural sequence: Day 1 main Chengdu Research Base + city (Wenshu Monastery, People's Park), Day 2 Dujiangyan + Mt Qingcheng (this article), Day 3 Leshan Giant Buddha day trip, Day 4 Mt Emei (overnight recommended for the summit sunrise), Day 5 return to Chengdu for a slow-food day. See the full Chengdu things-to-do guide and 5-day Chengdu itinerary for how this fits into the broader trip structure.
Plan the rest of your China trip on Trip.com
Once Dujiangyan is booked, Trip.com is the easiest single platform for downstream Chengdu hotel + Sichuan inter-city HSR + Leshan/Emei tour bundles. Use the same affiliate-tracked link for the rest of the trip.
FAQ
- Is Dujiangyan worth visiting from Chengdu?
- Yes — and it's the most under-rated full-day trip from Chengdu. Three things sit within an hour of the city: a UNESCO irrigation system from 256 BC that still feeds the Chengdu Plain after 2,200+ years (the oldest functioning water-management system on Earth), the Dujiangyan Panda Base (smaller and quieter than the main Chengdu Research Base, with a foreigner-bookable volunteer day), and UNESCO Mt Qingcheng — Daoism's birthplace. You can fit all three into 8 hours. Skip only if you have less than a full day, or zero interest in either ancient engineering or pandas.
- How do I get from Chengdu to Dujiangyan?
- Three options. (1) HSR + on-site shuttle (best DIY): Chengdu East or Chengdu North → Dujiangyan station, ~35-50 minutes, ¥15-22 in 2nd class, 30+ trains daily from 7:00am. From Dujiangyan station, public bus 4 or a taxi (~¥20) reaches the irrigation system entrance in 15 minutes. (2) Trip.com group day tour with English guide (~USD $55-75, hotel pickup, all 3 sites bundled with combined ticket). (3) Private driver from Chengdu, ¥800-1,400/day — flexible, English-speaking driver harder to find. The HSR option is the easiest DIY in the entire Chengdu day-trip set.
- Can I see Dujiangyan + the panda base + Mt Qingcheng in one day?
- Yes, with a tight plan and an early start. The realistic 8-hour structure: 8:00am leave Chengdu → 9:00am Dujiangyan irrigation system (90 min, including Yuzui levee, Feishayan spillway, Baopingkou) → 11:30am Dujiangyan Panda Base (90 min, lunch on-site) → 1:30pm transfer to Mt Qingcheng front gate → 2:00pm cable car up Front Mountain → 4:30pm descent → 5:00pm return Chengdu. The cable car is non-negotiable for the same-day combo — without it Mt Qingcheng eats 4 hours instead of 2.5. If you want the volunteer day at the panda base, it's a separate full day; you cannot combine volunteer-with-pandas plus Mt Qingcheng.
- Is the Dujiangyan panda base better than the main Chengdu base?
- Different, not better. The main Chengdu Research Base of Giant Panda Breeding (Chenghua District, north Chengdu) has more pandas (~150), more babies in the nursery, and the headline experience for first-timers. The Dujiangyan Panda Base / Panda Valley has 30-50 pandas in semi-wild forested enclosures, far fewer crowds (especially after 11am once Chengdu day-trippers leave), and more time per panda — you can actually watch one animal for 15 minutes uninterrupted. It's also the only base that runs a foreigner-bookable volunteer-for-a-day program (¥700, 9am-3:30pm). Pick Chengdu base if you have one panda morning. Pick Dujiangyan base if you've already done Chengdu base, want the volunteer day, or want a quieter forest setting.
- How do foreigners book the Dujiangyan panda volunteer program?
- Email the Dujiangyan Panda Base directly at least 2-3 weeks in advance — the program is real, runs daily for groups of 6-12, and costs around ¥700 ($100). The day runs 9:00am-3:30pm: orientation video, supervised feeding (bamboo + 'panda cake' pellets), enclosure cleaning, an English-language Q&A with a keeper, lunch, and a posed (no-touch) photo with one of the older pandas. Bring your passport — they record passport details for the certificate. The English booking interface is awkward; many foreigners book via a Trip.com or Klook 'volunteer' SKU that handles the email exchange for ¥850-1,000, which is worth the markup if your written Mandarin is zero. Wear closed-toe shoes; jewellery and bright nail polish are restricted (the keepers are strict on this).
- Front vs back Mt Qingcheng — which one?
- For a Dujiangyan combo day, Front Mountain (前山, Qiánshān) every time. Front Mountain is the Daoist heritage side — Jianfu Palace, Tianshi Cave (where Zhang Daoling founded the Way of the Celestial Masters in 142 CE), Shangqing Palace at the summit. ¥80 entry, 2-3 hours with cable car, signed in English-Pinyin. Back Mountain (后山, Hòushān) is the wild side — waterfalls, fewer temples, longer hike, ¥20 entry — beautiful but a separate half-day, not combinable with the irrigation system in 8 hours. Save Back Mountain for an overnight Mt Qingcheng visit if you have one.
- What's the combined Dujiangyan + Qingcheng ticket price?
- The official combo ticket (Dujiangyan irrigation system + Mt Qingcheng Front Mountain): ¥130, saving ¥30 versus single-entry (Dujiangyan ¥80 + Qingcheng front ¥80 = ¥160). Buy at either site's main entrance, valid for 2 days so you don't have to do both in one rush. The panda base is NOT in the combo — that's a separate ¥58. Cable car at Mt Qingcheng is also separate (~¥60 round trip), not in any official ticket bundle. Payment in cash, WeChat Pay, or Alipay; foreign-card POS is unreliable. Carry RMB 500 in cash as backup.
- When does the Dujiangyan irrigation system flood / drain (the annual ceremony)?
- The Qingming Water-Releasing Festival (清明放水节) is held every year on Tomb-Sweeping Day (April 4 or 5) — the 2,000-year-old ceremony where the wooden cofferdams (杩槎, mǎchá) at Yuzui levee are ritually broken open, marking the start of the irrigation season. It draws 30,000+ visitors and is the single most crowded day at the site, but also genuinely cinematic if you're a history traveler. The drainage period (winter low-water) is mid-November to early April — during this window you can actually walk down onto parts of the inner river bed, which is impossible during high-water season. For most foreign visitors, the best non-festival window is late March through May before summer rains, or late September through October after the rains end.
Related
- Chengdu city guide — full things-to-do, where-to-stay, and inter-city transport
- Where to see pandas in China — comparison of all 4 panda bases
- Things to do in Chengdu — 15 picks plus 3 sample itineraries
- Chengdu itinerary — 3 / 5 / 7-day breakdowns with day-trip slots
- Mt Emei — UNESCO Buddhist mountain (overnight from Chengdu)
- Leshan Giant Buddha day trip from Chengdu
Ticket pricing verified at the Dujiangyan irrigation system, Dujiangyan Panda Base, and Mt Qingcheng front-gate ticket windows, April 2026. UNESCO inscription year and joint-listing scope from the World Heritage Centre listing (whc.unesco.org/en/list/1001). Construction date (256 BC) and four-six watershed principle attributions follow the standard Sichuan Provincial Cultural Relics Bureau historical record. Volunteer-program timings and fees confirmed from the Dujiangyan Giant Panda Disease Control and Research Center 2025 international-visitor guidelines — verify the current month's pricing before booking, as the base periodically adjusts the volunteer fee.