The scholar rescued a red carp and saved his life at the critical moment 

書生經過一條小河，看到漁夫掉到了一條紅鯉魚，而他卻無意間發現，那條鯉魚竟然流出了一滴眼淚，書生頓時心生憐憫，於是便花錢將鯉魚買下，正因他今日的善舉，即將改變他未來的命運
The scholar was passing by a stream and saw a fisherman catch a red carp. He accidentally discovered that the carp actually shed a tear. The scholar was immediately moved with pity and bought the carp. His good deed today would change his fate.