Stop! You Fool Riding That Donkey Backward

Zhang Daju knows martial arts and medicine, and is blessed with extraordinary talent. After being struck by lightning, he transmigrates to the 1970s and gets himself a super-tough donkey. It's invincible against anything beneath a tiger, and evenly matched with anything above one. He saves a simpleton named Li Kui, and from then on, the three biggest troublemakers of Changbai Mountain are a team!