clothes to bring on last december

It is generally cold and dry in Dec in those cities, especially in Beijing. The average temperature is generally about 0~10C in Hangzhou, Wuzhen, Suzhou and Shanghai, while it is about -6~2C in Beijing. You need to bring warm winter clothes like woollen sweater, down jacket and warm trousers. When travelling to Beijing, you'd better also wear hat, mask, scarf and gloves.