Zhang Chuchuan has two roads. One is the northbound land, commonly known as Shu Road. However, this road is rugged and steep, and Li Zicheng will occupy Baoning area. A large amount of gold and silver is very heavy and inconvenient to transport; Therefore, the south waterway is the best choice, so there is the story of Zhang Shen's Yinhekou.
On the waterway, he was ambushed by gunfire and Zhang's boat was burned. "Thousands of gold, silver jewelry and silver sheaths were plundered and sank to the bottom of the sea." Zhang led the remnants back to Chengdu, so he had to go by land in northern Sichuan. The rest of the gold and silver were inconvenient to carry, so he gathered a large number of craftsmen and built a levee on Jinjiang to cut it off. In intercepting the river, he ordered to dig some caves several feet deep, and "buried all the gold, silver, cakes and Yao treasures of the Shu government in the caves" and covered them with mud and stones. Then, pull open the levee and Jinjiang flows again. As a result, a lot of gold and silver treasures sank into the river.
As for the craftsmen who participated in the project, all of them were put to death. Zhang's meaning is very clear, I can't take it away, and no one else can think of it. He called this practice "blocking gold". In other words, there are not only Zhang in Jiangkou and Jinjiang in Chengdu, but also Zhang He. However, the location of the sunken silver in Jiangkou is generally accurate, and the sunken silver in Jinjiang is unknown.