Why is there more precipitation in the south of monsoon region than in the north?

Don't be too professional, people are still very confused.

To put it simply: the closer to the ocean, the stronger the ocean wind and the more water, so the more precipitation; On the contrary, the farther away from the ocean, the smaller the ocean wind intensity, the less water, so the less precipitation.

Second, only the summer monsoon affects precipitation, and the winter monsoon has little effect on precipitation.

Third, the summer monsoon that affects China mainly comes from the low latitude Pacific Ocean, while the summer monsoon from the Indian Ocean is relatively small for some countries in China.

Although both the north and the south of eastern China are affected by the summer monsoon, the northern region is far away from the summer monsoon, with less intensity and less water vapor, while the southern region is closer to the summer monsoon, with greater intensity and more water vapor.

Therefore, in the monsoon region, there is more precipitation in the south than in the north.

Supplement: China blows summer monsoon, mainly from the Pacific Ocean, and secondly from the Indian Ocean, so it mainly blows southeast wind and southwest wind. The ocean air is warm and humid, so it is hot and rainy here when the summer monsoon prevails (or in areas controlled by it).

The winter wind blows in China, mainly from the Eurasian continent at high latitudes, so the northwest wind or northerly wind blows mainly in winter. The land breeze is cold and dry, so it is cold and dry when the winter breeze prevails (or in areas controlled by the winter breeze), and the precipitation is scarce.