Snake Demon and Taoist Priest

This is a story about a Taoist priest who captured a snake demon and forced him to collect merits (Taoist priest: Why is he like this? I am responsible! Huh? Why is he a man? Snake demon (heartless): Taoist priest! Look at my body! I am a man!) Famous scenes that have already happened: (unorthodox) Shura field, (unorthodox) demon king, (unorthodox) younger brother... It's all based on fun, there are many bugs, I may have to correct them as I write... The first world, the sickly eldest lady * the cool and cold master (involving Lily) The second world, Master Leng Ao* Demon King (involving romance) The third world, an ordinary young boy * a handsome miracle doctor (the past does not follow the wind) The fourth world, the actor*the prince (the kindness is as heavy as a mountain, he must repay it with his life) The fifth world, Prince * Proton (basically no dark room) The sixth world... Overall, this is a cookie, a mindless article, just for my own entertainment. Purpose: abide by the law and serve the people