Gansu in January: Deep Winter on the Silk Road

Lanzhou: daytime -2°C to 3°C, nighttime -12°C to -8°C. Smog can be significant. The riverfront is cold and often windy.

Zhangye and Jiayuguan: daytime -5°C to 0°C, nighttime -18°C to -10°C. Wind chill makes it feel colder. Clear days are beautiful; overcast days are grim.

Dunhuang: daytime -3°C to 3°C, nighttime -16°C to -10°C. The desert cold is dry and penetrating. Wind is the real enemy — a calm -5°C day is pleasant in the sun; a windy -5°C day is miserable.

Xiahe and Gannan: daytime -8°C to -2°C, nighttime below -20°C. Most guesthouses close. Roads can be impassable. Not recommended in January unless you have specific monastery connections.

Mogao Caves: open year-round with reduced hours. Visitor numbers are at their annual minimum. You may share a tour group with 5-10 people instead of 25-30. The experience is immeasurably better.

Zhangye Danxia: open and often spectacular with snow. The colors are more muted under cloud cover but can be extraordinary with snow contrast.

Jiayuguan fortress: dramatic in winter light. The wind is intense — dress accordingly — but the empty ramparts under a gray sky feel truer to the place's history than the summer tourist version.

Lanzhou food: beef noodles taste even better when it is freezing outside. The indoor food culture — hot pot, lamb soup, tea houses — comes into its own.

Southern Gansu above 2,500m is effectively off-limits. Skip Xiahe, Labrang, the grasslands, and Langmusi. Save them for May-September.

Outdoor all-day hiking. You can do 2-3 hours outside with proper gear. Eight hours is not realistic.

Budget hotels with inconsistent heating. Spend more on accommodation in January — it is the difference between a hard trip and an impossible one.

Thermal base layers (top and bottom), fleece mid-layer, heavy down jacket (rated to at least -15°C), windproof outer shell. Warm hat that covers ears, insulated gloves, thick wool socks, waterproof boots with good grip. Hand warmers. Thermos for hot drinks. Power bank (phone batteries drain fast in cold).