What's the weather like in Jiuzhaigou, Huanglong and Hongyuan? Suitable for clothes?

Jiuzhai and Huanglong are plateau areas, and now the temperature is already very low, and the temperature difference is very large. There are four seasons in a day here. It is recommended to bring the following equipment: T-shirt, long-sleeved sweater, down jacket and underwear. Be sure to wear waterproof shoes. It often rains and the temperature is low in Jiuzhai. You can imagine how uncomfortable it will be if you get your shoes and socks wet.