Nine years of martial arts.
Travel back to the Tang Dynasty and become Li Ke, the third son of the Prince of Qin. One week before the Xuanwumen Incident, he usurped the throne of Li Jiancheng and Li Er!
"What? Let him be a little kid as the emperor?"
"Mr. Xuan! My father is suffering from hysteria! He actually gave the throne to a little kid!"
…
"Starting from today, Li Jiancheng and Li Yuanji will go farming. They will plant ten acres first to try their hand!"
"Li Er and Cheng Yaojin are my bodyguards, and Changsun Wuji is my administrative secretary!"
…
"Old man Xu, I advise you not to be ignorant and hurry up and settle the marriage between me and Xu Hui!"
"What? You don't want to? Do you think I have ten machine guns? Huh?"
…
When the officials were at a loss, they remembered what Li Ke told them:
"The prosperous age of the Tang Dynasty is as you wish!"