Siheyuan: Reborn in the Sixties, in a Den of Troublemakers

Chen Yu'an never imagined he'd end up in a chaotic courtyard, living there with his younger sister, in a den of beasts! Fortunately, he bound a Sign-In System. Through his daily sign-ins, Chen Yu'an steadily improves his mastery of all kinds of skills! That way, he won't get taken advantage of by the beasts in the courtyard. So Chen Yu'an puts a great deal of effort into cooking and medicine, and resolves to get into university! When everyone finds out that Chen Yu'an plans to take the university entrance exam, they're all dumbfounded.