How many clothes do I need to wear to travel to Nanjing, Wuzhen and Shanghai during the Spring Festival? Will it be cold? I heard that the indoor temperature is very low. Can the hotel have air condit

How many clothes do I need to wear to travel to Nanjing, Wuzhen and Shanghai during the Spring Festival? Will it be cold? I heard that the indoor temperature is very low. Can the hotel have air conditioning? It is recommended to wear down jackets, and pay special attention to the protection and warmth of hands, feet and face. Although Nanjing and Wuzhen Shanghai are not as cold as the north in winter, they are relatively humid, and it often rains lightly in winter, making hands and feet vulnerable to frostbite. Moreover, southern hotels generally have no heating, only air conditioning, which usually takes a long time to warm up, and staying in air-conditioned rooms for a long time is also very uncomfortable.