Coat: autumn clothes, sweaters, coats (or autumn clothes, thermal underwear, leather clothes)
Base coat: autumn trousers, woolen trousers and a pair of trousers (or autumn trousers, warm trousers and a pair of trousers).
You don't usually need to wear a hat. When it is below zero 10 degrees (this kind of weather is almost rare, and it is usually 5 ~ 6 degrees in the coldest time), you can wear down jackets. I wish you a wonderful and warm winter in our Henan province.