I Kill Demons and Demons in the Long River of Time

In the different world of Kyushu and the Immortal Dynasty of Jin Dynasty, all the saints have returned to heaven, and demons have caused chaos in the world. Yanbei traveled here and obtained the [Historical Simulation System]. He can simulate the past, modify the past, and reproduce the past. In the long history, Yanbei has countless identities. Or a Guizhou ranger, or a royal scholar... In the era of war, he saved countless people and killed people without any calculation, so he was called the "Medicine Sword Immortal"; In the age of mythology, he bet with the sky and drew a line that thousands of demons could not cross. He was called "Yi Tianzhenjun"; In the age of the gods, he once wiped out all the gods in the world and destroyed all the Buddhas in the heavens. This is called "Nightmare"; … In this life, Yanbei will become a saint and ask the heaven.