Why Spring Festival is different
China runs roughly 200 million migrant workers, most in the manufacturing-heavy coastal provinces (Guangdong, Zhejiang, Jiangsu, Fujian, Shandong) but with home registration (户口) in inland provinces (Sichuan, Anhui, Henan, Hunan, Hubei, Guizhou). Spring Festival is the once-a-year window when the migrant workforce travels back to home villages for family obligations. The migration is logistically vast: 3 billion trips are made over the 40-day extended Spring Festival travel period (春运). Train tickets sell out 30 days before the holiday; flight prices triple; long-distance bus services run at capacity around the clock.
Factories cannot run without the migrant workforce. The official statutory holiday is 7 days but the practical disruption is 14 to 28 days, because workers travel up to 36 hours each way and many use the window for delayed family events (weddings, births, family elder visits) that postpone the return. Factory production lines run 60 to 70 percent staffed on Day 1 of post-CNY, ramp to 90 percent over a week, hit normal output around Day 14. For chemical batch production specifically, QC test cycles run 50 to 100 percent longer than usual for the first 3 to 4 weeks post-CNY because the QC lab is rebuilding the rhythm of the line.
Customs runs at minimum staffing through the holiday and the 1 to 2 days after. Routine declarations take 3 to 5 business days longer than usual. The week before CNY is when delays are worst, because the queue is full of last-minute filers and inspections concentrate on outbound containers. Cargo declarations should land 7 working days before holiday for clean processing, not 1 day before.
Ports run light through the holiday and the first 3 to 5 days after. Vessel calls drop, container yard turnover slows, terminal handling charges sometimes spike on the first 2 days post-holiday because of the demand-supply mismatch. If the cargo can wait two weeks past the holiday, freight is cheaper; if the cargo cannot wait, the surcharge bites.
National Day Golden Week (1 to 8 October) is the second-largest disruption. The migration is shorter and less complete than CNY, but factory production drops to near zero and customs runs partial. The 2026 calendar is unusual because Mid-Autumn falls 25 to 27 September, only days before National Day; many factories bridge the two into a 12-day shutdown 25 September to 7 October. Plan around the bridge, not the official statutory days.