The Weak River also known as the Weak Water or Ruoshui (Chinese: 弱水; lit. 'weak water') is an important feature in the mythical geography of Chinese literature, including novels and poetry over a course of over two millennia from the Warring States to early Han dynasty era poetry of the Chuci onward. The Weak River is one of the mythological rivers flowing near Kunlun, home of a Western Paradise. The Weak River flowed with "water" so lacking in specific gravity that even a feather would not float, thus being a protective barrier against the unworthy, who otherwise would profane the paradise on Kunlun, and perhaps even climb up to Heaven and disturb the deities and other inhabitants residing there. In the novel Journey to the West, the Weak Water River forms one of the obstacles the fiction