Why is it always cloudy in Wuhan?

Cloudy means that there are more clouds in the sky and there is not enough sunshine, but you can still see the blue sky through the cracks in the clouds.

Wuhan is located in the middle of Hubei Province and the east of Jianghan Plain. Urban landscape is a hill extending from Jianghan Plain and Dabie Mountain. Its climate belongs to subtropical humid monsoon climate, with four distinct seasons and abundant rainfall. It is also located inland, far from the ocean. The terrain is like a basin, which is easy to collect heat and difficult to dissipate heat. There are many rivers and lakes, and there is much water vapor at night. Coupled with the urban heat island effect and the control of subtropical high during the summer drought, there are more clouds in the sky and insufficient sunshine.