Bingzi Dingchou Jianxia Shui (丙子丁丑涧下水) refers to water that is strong in Zi (子) and weak in Chou (丑). When it is strong but turns weak, it cannot become a river, hence it is called Jianxia Shui (涧下水).
Bingzi Dingchou Jianxia Shui (丙子丁丑涧下水) refers to water that is strong in Zi (子) and weak in Chou (丑). When it is strong but turns weak, it cannot become a river, hence it is called Jianxia Shui (涧下水).