I will travel to Yunnan tomorrow. According to my online reading, the weather is about 17 8 degrees. I come from Harbin in the northeast of China. What should I wear to go there?

Traveling to Yunnan is not a big problem. It's just thicker when it's coldest. I suggest wearing a long-sleeved coat. Because the temperature difference here is a little big in the morning and evening, it is basically very hot at noon. Just wear a thin sweater or a long sleeve T. It will be a little cold at night, but it is much warmer than in the northeast. If you want to go to a place like Lijiang, you may have to wear a thicker coat sooner or later.