Vacation Time in the Courtyard

There is no space, no system. No job, no savings. He is also a son-in-law who cuts in the door! Zhang San, who had nothing, came to an era where he knew nothing. How to survive? In fact, Zhang San thought he was here for vacation. Because people of the new era have come to this era, How is this different from wilderness survival? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.