Why is the air in the north so dry and the weather in Wuhan so humid?

It's actually quite simple. Although the weather in the north is cold but dry, and the water surface area is very small, but in our whole city of Wuhan, one quarter of the water surface area is rare in the whole country, and the air humidity is high, so clothes are difficult to dry, which also explains why Wuhan is a stove with high humidity and high temperature, so it is very stuffy and hot. Wuhan people's bad temper is also related to the weather.