What should we pay attention to when traveling to East China in this season? The weather is bad, clothes!

I'm from Hangzhou. It's getting cold here now, but it won't be very cold yet. Recently, the temperature has been maintained at a maximum of about 15 degrees. Usually wear a cotton sweater (called autumn clothes in the north)+a thin sweater+a general coat. Some people who are not afraid of the cold only wear a shirt and a coat. However, at this time, the season is changing, and it may get colder when you come, so take more clothes.