Water Margin: the Starting System Forced Me to Upgrade

Cao Laoer, a fisherman from Poshijie Village in Chuancheng Liangshan, has been fishing for a month and his experience bar is stuck at 591. The system requires me to save up to 600 before giving me new abilities. There are water ghosts and monsters in this place, and the three Ruan brothers live in the next village. I don't even dare to go to a water park eight hundred miles away. I'll train myself into an experienced fisherman first.