"Biography of the King of Shu" contains: "The first king of Shu was named Can Cong, the descendants were named Guan Bai, and the second king was named Yufu."
So, did this "Genesis" Can Cong come from Chengdu Plain or people around the basin? Did he grow up from the people in Shu, or did he migrate to Shu from other places and finally gain a dominant position? According to Zhang Qiao's annotation of Shu Du Fu and quoting the Biography of Shu Wang, "Can Cong began to live in Minshan Stone Room." According to historical research, this Can Cong tribe is a branch of the Di nationality. They have lived in Minshan for generations. Because the mountains are high and the roads are dangerous, of course, they can't build houses with "wooden bones and mud walls" like plain residents to make their lives more comfortable. Instead, they live in caves similar to caves on cliffs according to local conditions. This is a tribe that is good at raising silkworms. They look and dress strangely. "It was an era when everyone was lovely, but his eyes were drooping, he couldn't read, and there was no music." In other words, their eyes protrude forward like crabs, their hair is combed into a "vertebral bun" at the back of their heads, and the style of their clothes is oblique fork on the left. Can Cong sat in a closed stone room all day thinking, trying to find a better place to live and work in peace and contentment, because life in the mountains is very hard, which is also very unfavorable to the development of sericulture. Later, when he heard that Chengdu Plain was open and fertile, he led the tribe to migrate from Minshan to Chengdu Plain and set up camp in Sanxingdui, Guanghan. Perhaps there were tribes in Sanxingdui area at that time, but their strength was not strong enough, so they were naturally annexed or assimilated by Can Cong. This migration left many ancient place names along the way, from which we can see the route of Can Cong's southward migration from Minjiang River to Chengdu Plain. For example, The Records of Places of Interest in the Middle of Shu recorded the Silkworm Cliff Pass, Silkworm Cliff Stone and Silkworm Cliff City successively.