Taiping Guangji Scroll 456: “Snakes 1” story No. 2 , 蛇丘
Snakes mound is found in the eastern sea, it is a dangerous land with lots of mud. A multitude of snakes lives there, and no people are to be found. Some snakes may have a human head with a snake body.
Taken from “Fang Zhong Ji” (方中記)
Strange Tales 