Great Tang: I Flip Xuanwu Gate from the Start!

He transmigrates to the eve of the Xuanwu Gate Incident in the Tang dynasty and becomes the son of Li Jiancheng, the Crown Prince Yin. Facing the threat of his entire family being wiped out, he strikes first, using clever schemes to imprison Li Shimin and the others, and ends the age-old succession struggle with an iron fist. He then ascends the throne and ushers in a golden age that draws tribute from every dynasty...