Ended up in a lake while seeing a lady bathing there is one of the most cliche thing in chinese novel.
Its the same as in Japanese novel where mc and fmc fell down and ended up in the most cringe position
Its hard to translate. The Chinese word is 陽剛之氣. Using translation it will come as masculinity.
It is a hard word to translate correctly. But what it basically mean is Yang energy. 陽=yang.
Mc need a lot of YANG energy. Thats all it mean.