Li Er's Unhinged Crown Prince

Li Cheng’s soul transmigrates into the Tang Dynasty, where he becomes Li Chengqian, the crown prince and son of Li Shimin. He’s practically going mad. The Tang Dynasty, fourteen hundred years in the past: no System, no Douyin, no advanced technology... The Tang Dynasty is already powerful, and he doesn’t want to follow others in pushing reforms. Inventing new things is fine as an idea, but that’s all. After failing to awaken a System or return to modern times, he starts pulling all kinds of crazy stunts. From then on, the wise and mighty Heavenly Khan of the Tang Dynasty, Li Er, has a madcap crown prince on his hands...