Great Tang: Father, I Really Didn't Plan to Rebel!

After transmigrating into the Tang Dynasty as Crown Prince Li Chengqian, he feels he's been dealt a raw hand. His rebellion fails right from the start, and he's exiled to Qianzhou. Luckily, he has a God-Tier Sign-In System. Famous ministers and generals, military formations and blueprints for inventions from throughout history, miraculous tools for the people's livelihood... He signs them all in one by one. A year later, Li Shimin visits. Seeing Li Chengqian surrounded by famous generals and commanding hundreds of thousands of troops, he angrily demands, “You rebellious son, are you planning another coup?” Li Chengqian can only sigh helplessly. “Father, I really wasn't planning a rebellion!”