Siheyuan: Life Since 1962

Li Xiangyang had a pretty good family, but after getting knocked unconscious while watching a commotion, he opened his eyes to find himself transmigrated to the 1960s and occupying a new body. He also gained a life-experience System. Fortunately, the System lets him travel between two worlds. But with a time limit in place, he can only stay in the 1960s for now. When he finally returns to his original world, however, he discovers that everything has changed...