What was the weather like in Yunnan at the end of 10? What clothes are suitable for wearing?

It depends on which part of Yunnan you are asking.

Northeast Yunnan is still relatively mild. A coat that is neither too thin nor too thick will do. It is best to have long sleeves inside, because the temperature difference between day and night is large. You don't have to wear a coat during the day.

It is generally hot in southern Yunnan. One dress is enough.

The temperature in northwest Yunnan is low. Sweaters are a must.