What happened at the end of the Western Han Dynasty? Tamp rice with water?

The earliest mention of Shui Dui is the works of Huan Tan in the Western Han Dynasty. "Taiping Yulan" quoted Huan Tan's eleventh article of "New Theory of Leaving the Car" and said: "Fu Yizhi.

Restored eight-headed pheasant model diagram

Chu Jiu, everyone came to help. And later generations are smarter, and they earn ten times as much by practicing physically; We also set up mules, cows and horses for machines to use, and put them into the water, which benefited a hundred times. "The' drowning' here is a pheasant.

Judging from the book "New Theory", as early as around A.D., the waterwheel drove the cymbals, which is nothing new. In the 4th year of Emperor Han 'an's Yong Jian (A.D. 129), Shang Shu's servant shot Seo Woo and suggested that he build a river course and make water rafts in the Qiang people's residence in Longxi. Since then, a rising tide lifts all boats in remote areas, "work-study programs, and sufficient rations". What's more, Wang Jue, Princess of the Jin Dynasty, had so many water rafts that she had to stop them for the convenience of the people.

"The Collection of Ancient and Modern Books" contains: "Anyone who lives in a mountain country or by a river will do what he does, and the method of attacking rice will save ten times the manpower."