Demonic Reform of the Tang Dynasty: I, the Most Powerful Tyrant!

Traveling through the Tang Dynasty, the day before the Xuanwu Gate Incident. He became Li Xuan, who was deposed as the crown prince and hid in the imperial city due to his weak health. Awakening the most powerful tyrant system, I snatched Li Er's throne at the beginning. I am the tyrant and I have the final say! Li Xuan: "The first thing I have to do is to dismantle the Ordnance Supervisor and Armory, and abolish the post of Young Supervisor." Minister: "Why is the emperor like this?" Li Xuan: "I want to build an arsenal and set up a factory director!" Minister: "Arsenal... Arsenal??" Li Xuan: "By the way, call Cheng Yaojin over. Stop using the three-axe. Can Gatlin understand?" Li Yuan, who had given up his position, looked at the mecha tanks shelling the Turks and conquering the world, and asked Li Xuan tremblingly: "Is your Tang Dynasty... A serious Tang Dynasty?" "No, it's the Demonic Reform of the Tang Dynasty!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.