Off the northwest coast, north of Chishui, there is Zhangwei Mountain. There is a god with a human face and a snake body, with a red body and straight eyes. His silence is dark, his vision is bright. No food, no sleep, no rest; wind and rain are just a sigh of relief. It is Zhu Jiuyin, which is called Zhulong.
---"The Classic of Mountains and Seas·Great Wilderness Northern Classic"