Datang: It's a Showdown, I'm Such a Waste!

Travel to the Tang Dynasty. He became the most useless prince in history, Li Chengqian. Then... He inexplicably destroyed the Turks. Inexplicably, the national power of the Tang Dynasty became ten times stronger and the economy became more prosperous! Inexplicably, he ascended the throne and became the emperor. Li Shimin: "I have this prince, so why worry about the world being unhappy? I will give way to the prince now!" Fang Xuanling: "With this prince in the Tang Dynasty, there will be no worries for all generations!" Li Jing: "The prince's martial arts is the best in the world. He looks down on the world. Who can compete with him!" Li Chengqian: "What are you doing? I'm showing off my cards. I'm really just a waste! Why don't you believe it... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.