Day 1
Central Street & Sofia
European Harbin.
Morning: St. Sophia Cathedral square. Afternoon: Central Street (Zhongyang Dajie) walk. Evening: Songhua River ice sculpture park (cheaper preview).

3 days · balanced pace
The world's biggest ice festival + Russian architecture + a legendary sausage.
Day 1
European Harbin.
Morning: St. Sophia Cathedral square. Afternoon: Central Street (Zhongyang Dajie) walk. Evening: Songhua River ice sculpture park (cheaper preview).
Day 2
The main event.
Afternoon: Enter Ice & Snow World at 15:30, watch lights turn on at dusk. Evening: Slide the ice slides; food street inside for hot food. Late night: Modern-brand ice cream — a Harbin winter tradition.
Day 3
Ski or a Russian-themed park.
Morning: Volga Manor Russian park (30 min drive) OR Yabuli ski resort day trip (2 hr). Evening: Fly out.