The "clear Yellow River" appears at Hukou Waterfall... The governance of the Yellow River is a major event for the Chinese central government in all dynasties. It can be said that the government has been fighting with the Yellow River for thousands of years. The biggest challenge of the Yellow River is that it carries silt from the upper reaches. Of course, this is also the cause of the North China Plain. The problem is that this silt will accumulate in the river channel to form siltation (similar to cerebral thrombosis), and then the Yellow River often changes its course, the so-called dragon swinging its tail. The outlet of the Yellow River has never been fixed since ancient times. The northernmost one goes out from Tianjin, and the most difficult one is to "take the Huai River into the sea" from northern Jiangsu.

Every time the Yellow River changes its course, it will have a huge impact on the Central Plains, which is the so-called "Yellow River Flood Area".

To govern the Yellow River, the upper reaches must be governed in the end. Zhu Rongji instructed that year, and it has always been governed according to this model, which has greatly reduced the sand content of the Yellow River.

The clear water of the Yellow River at Hukou Waterfall reflects that this government has found the root cause and has been working hard for decades.