Shui gui (Chinese: 水鬼; pinyin: shuǐ guǐ; literally "water ghost") are the spirits of people who drowned. They lurk in the place where they died, and drag unsuspecting victims underwater and drown them in order to take possession of their bodies. This process is known as ti shen (Chinese: 替身; pinyin: tì shēn; literally "replace the body"), as the spirit will return to the world of the living in the victim's body while the victim's soul will take the former shui gui's place and constantly seek to seize possession of another living person's body.
Read more about this topic: List Of Supernatural Beings In Chinese Folklore