Great Tang: I Began Conquering the Four Corners of the World Without Becoming a Prince

After transmigrating into the body of Li Chengqian, Crown Prince of the Tang dynasty, he is hated by the people for his predecessor's bullying, womanizing, and street thuggery.

Then Li Tai sets him up, framing him for murdering someone in the street.

His biological father, Li Shimin, despises and ignores him, strips him of his crown prince title, demotes him to commoner, and exiles him beyond Yumenguan.

What use is a father like that, who won't even hear him out?

To his surprise, Li Chengqian binds himself to a sign-in System. On the very first day, he gains the strength of the God of War, Xiang Yu.

Li Chengqian: “If I can't be crown prince, then I'll become an emperor who rules the world!”

“Your Majesty! Li Chengqian has conquered Tuyuhun and founded the Great Qin!”

“Your Majesty! Li Chengqian has conquered the Western Turks...”

“Your Majesty! The Tibetan king, Songtsen Gampo, has led his army to submit to Great Qin.”

“Your Majesty! Sob... The officials have written a blood petition, begging you to apologize to His Highness.”