Cultivation of Immortality Begins with the Xuanwu Gate Incident

In the ninth year of Wude, Yi Changqing witnessed Li Shimin's Xuanwu Gate changes as a time traveler. But this body's previous life was that of an immortal who made mistakes and was demoted to the mortal world. Only by collecting 100,000 merits can he return to heaven. Until Yi Changqing carved such a four-character quote on the stone tablet of the Imperial College in Chang'an...