The Ups and Downs of Rivers and Lakes

Shen Guanfu, Guanfu! Guanfu! Observe everything and repeat the cycle. When he came down from the mountain, he was still a clean young man; when he went back up the mountain, he was already a middle-aged man who had seen through people's hearts. The process in between is 'Guan Fu'. Then you want to watch the process together, (Darkness, if the abuser doesn't like it, don't enter!)