Pretending not to be serious

When Old Man Chen picked up his granddaughter from school, he saw a notice on the bulletin board prohibiting the setting off of fireworks. He sighed. He had not performed medicine-made puppets in public for several years... When Old Man Chen was playing with medicine-made puppets at home, his granddaughter quietly saw an iron can and opened it to play with. However, she accidentally caused a fire and the tin can exploded... During the explosion, Old Man Chen and his granddaughter quietly switched bodies. Nowadays, the old man Chen who has a vicissitudes of life hides the heart of a girl, but Chen Jingjing, who is in his prime, is an old man who picks his feet at heart... A series of chain reactions occur, and a ridiculous story is officially staged in this peaceful countryside.