How to avoid the cold when going to Yunnan in winter vacation?

If you come in the winter vacation, you can feed the red-billed gull in Kunming and then go all the way south. Want to experience tropical scenery and authentic Dai flavor, you can go to Xishuangbanna, and you can also go to Thailand from Banna in your spare time. If you want to eat rice noodles, bean curd and all kinds of delicious food, you can go to Honghe, build water in Mengzi and take a half-hour train to Vietnam to eat small rolls of rice noodles.