He traveled to the Tang Dynasty and became Crown Prince Li Chengqian, constantly signing in.

In the first year, three thousand "Luowang" spies signed up, each of them had extraordinary skills and was good at lurking and spying.

The next year, he signed in at Mount Shu, where there were three thousand sword masters. They all obeyed the prince's orders and could establish their own sects.

In the third year, a million dan of grain and fodder were signed in, enough to support a large army for half a year.

In the fourth year, he signed in and obtained countless blueprints of magical weapons, from the Hundred Refined Sword to the Armor-Piercing Heavy Crossbow, and crafted them in the workshop.

Until today, Li Chengqian, these 8,000 Iron Pagodas, are the pinnacle of heavy cavalry. Both men and horses are armored. When they charge, the mountains collapse and the earth cracks, which is enough to sweep away any heavy cavalry.

This day.

Li Shimin was preparing to depose Li Chengqian from the position of crown prince.

Li Chengqian leads eight thousand iron floats to confront each other at Xuanwu Gate!

Eight thousand is eight thousand, Your Majesty calls himself the Supreme Emperor!

Li Shimin: Li Chengqian, do you want to rebel?

Li Chengqian: Father! Please address me as Your Majesty!

Li Shimin: How dare you do this!

Li Chengqian: Why not! You dared to do the Xuanwu Gate Incident! Why shouldn't I dare?