I'm going to Jilin (Yanji) for Christmas. I don't know what to wear.

Usually you wear ordinary thick underwear, because there is heating in the room, and it is very hot in the room. Sweaters and trousers should be thick, down jackets should be long, and cotton shoes should be worn on your feet, that is, the kind with hair inside. My home belongs to Yanji. If you come to our place, I suggest you buy cotton underwear online. The down jacket should be long. The main reason for the cold here is the wind. As for the shoes you mentioned, there is no need to be so tightly armed. Thank you and welcome to Yanji!