The protagonist Zhang Ergou (a nickname given by his master to make a living) grew up in the mountains with a crazy old Taoist priest. Over the past eighteen years, he has learned a lot of skills: collecting herbs, catching snakes, reading Feng Shui, treating difficult and complicated diseases, and also knows an inexplicable "Tai Qing health boxing". Before going down the mountain, the master gave him half a jade pendant and a yellowed marriage certificate, telling him that he had saved a big boss back then and had arranged to marry his daughter, who happened to be eighteen this year. After a lot of experience in the world of mortals, Zhang Ergou finally embraced the beauty.
