The Prodigal Son of the Tang Dynasty Stunned Li Shimin at the Beginning

An orphan from the previous life traveled through the Tang Dynasty and became Li Shimin's unpopular son Li You. In order not to follow Li You's old path: die for rebellion at a young age! Also to save the precious family relationship! Li You fired glass, invented gunpowder, and improved metallurgy! When the annual steel production exceeds 100,000 tons! When the cement road connects the world! When a hundred-foot tall building rises from the ground... Li Shimin was shocked: "It's amazing! My son's talent is unparalleled in ancient and modern times!" Some years later... Li Chengqian and Li Tai were fighting for the throne. Changsun Wuji proposed to make Li Zhi the crown prince. Li You's figure appeared in Li Shimin's mind, "I have a Qilin son, and I should make him the crown prince!"