According to "Yu Heng Zhi of the Yunnan Sea" written by Tan Cui of the Qing Dynasty: "Jade comes out of the Jinsha River in the south. The river belongs to Tengyue. It is more than two thousand miles away from the state. There is a lot of jade in it. The Yi people collect it and leave it in piles on the river bank. The rough ore is as big as pebbles. I don't know if there is jade in it or whether it is good or bad. Traders buy it at will and transport it to Dali and Yunnan provinces. They have jade workshops. When they see the jade, they become rich. In the Chu State two thousand years ago, there was a man named Bian He. A piece of jade was found and presented to the two kings of Chu. The kings thought they had been deceived and cut off his left and right legs. Bian He was unable to walk without legs. He held the jade and cried on the Chu Mountain for three days and three nights. Later, King Wen of Chu cut off his left and right legs. Knowing that, he sent someone to bring the jade and asked a jade worker to cut it open. This is the origin of "He's Bi". Where did this piece of jade come from, where did it disappear, and what is the nightmare that has trapped the He family for generations...
Purpose: Persevere to the end, overcome weakness, and pursue the truth