Water Margin Clouds Dominate the World

I'm lucky enough to travel to the world of Water Margin. I'm not the hero in the original novel, nor is I Tongguan Gaoqiu. I have to lie on the bed of Ouchi's office to be castrated! What to do, you ask? I don't know either! Fortunately, my master is Zhou Tong, I have spirit in my body, and my luck is very good, so I don't care when I fall into the grass, but I dominate when I get wet!