A man named Xu Xian rescued two snakes, one white and one green. The white snake changed into a woman to repay Xu's kindness and married him, while the green snake changed into her maid and accompanied her.
有个和尚叫作法海禅师,他看见许仙脸上有“妖气”,于是就把许仙藏在金山寺法座后面。白娘娘前来寻夫,于是就“水满金山”。