My Vampire System (WN) - Chapter 101: Leo's Question

Qin Yun, fallen crown prince of Qin Empire. Inherits the martial legacy of nine sun world. The superb martial legacy in his arsenal, insane inscription techniques in his fingertips, surrounded by enemies and beauties abound. But Qin Yun is not satisfied, he wants to go beyond the nine suns into the great astral infinity, to become a GOD.

The unparalleled Demon King Ye Xuan, who was able to heal the death or the living alike and holder of the medicine Holy Scripture, was betrayed and killed by his fellow Demon Kings. But he reincarnated into the body of Ye Xuan, the prodigal son of the Ye family and vowed to himself that he would return to his peak and take back everything that belonged to him!

- Description from Novelupdates

Bai Muchen had it all — not only was he the most renowned martial artist of the Nine Heaven continent, he even had the Five Meridians of Tianling and was engaged to Xuan Qingzhu, the beautiful daughter of his mentor. But everything falls apart when he’s set up by his fiancé and mentor during a cultivation session, and he is killed.

Reborn as a young man named Xiang Nan, the heir of a declining family, can Bai Muchen get his revenge?