The Great Tang's Bear Prince: From the Start, He Angers Li Shimin into a Faint

Li Chengqian transmigrates to the first year of the Zhenguan era and becomes the most mischievous crown prince in history. He saves his mother with saltpeter, tears down temples and destroys Buddhism, invents soap and glass, punches the Turks, and kicks the Japanese into submission! Li Shimin's blood pressure skyrockets every day: "I don't want this crown prince anymore!" Li Chengqian: "Father, you take a break. I'll help you conquer the world." From Chang'an's troublemaking king to Emperor Chengqian, worshiped by all nations, he uses technology and his fists to plant the Tang banners across the entire world! [System + comedy + war + farming, watch how this unruly crown prince turns the Tang dynasty upside down and grows strong through laughter!]