Which branch of Chinese painting do clouds belong to?

This painting belongs to the landscape painting in Chinese painting.

Traditional landscape painting rarely deliberately draws clouds, and often attaches the state of clouds to the mountains. However, the development of ink and wash landscape painting in modern times is not limited to these, and it can be created with cloud as the theme. There is no difference between clouds and sky. Clouds will inevitably appear one day, and clouds will show the sky more. The ancients painted clouds, not only to draw the shape of clouds, such as cumulus clouds, convective clouds, clouds, clouds, waterfalls, etc., but also to show the meaning of clouds in different climatic conditions.