What clothes should I take to travel to Yunnan (Heilongjiang) tomorrow? Please ask interested friends to answer.

Yunnan has a large temperature difference during the day, which is a little cold in the morning, very hot during the day and strong ultraviolet rays. In order to prevent the sun, it is best to wear a sun hat and prepare rain gear. The climate there is also very dry, although the climate in the northeast is also very dry, but Yunnan belongs to the western plateau, so drink more water.