What's the weather like in Beijing next week?

It has been very cold and windy in Beijing these days. If you don't come out to play in the morning and evening, it's enough to wear a thin sweater and a thin coat and trousers during the day. If you want to go to Huairou, Yanqing and other suburban mountainous areas, you have to wear a cotton-padded jacket. If you just climb Xiangshan, there is no need. You'd better bring a hat, scarf or something, not too thick.