What should I wear to Jilin (Yanji) at the end of February?

I think the quality of boots sold in the south is generally not very good, and they are not as warm as those sold in the northeast. Anyway, I think the boots should be made of wool and the underwear should not be too thick. We all wear ordinary clothes, then sweaters and trousers, of course, thick, and then down jackets outside. I don't think people feel cold indoors most of the winter in Northeast China, unlike in the south, at least I think so.