The rivers in China have been dry for years.
Now from what I heard:
Anxiety grows as China’s Three Gorges dam hits highest levelhttps://earthobservatory.nasa.gov/images/147006/excessive-monsoon-rains-flood-asiaIn some years, however, the amount of rainfall breaks records in places. That has been the case in 2020. By mid-July, severe flooding affected millions of people across South and East Asia.
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Since early June, unusually strong, stationary weather systems have produced frequent storms and heavy rainfall across south-central and eastern China. Dozens of rivers and lakes swelled to record high levels.
As usual, you have some source for what you're talking about?