I'm Really Unscrupulous

In the 942nd year when the human race opened up the Leize Realm, the Leize Demon King Kui Niu broke into the Mahayana True Fairyland and led countless monsters to launch a demon tide. The blessed land of Lingshan turned into scorched earth, and countless human races died in the demon's belly. Many immortal sects have been seriously damaged in the past thousand years of development in the Leize Realm, and they have reported this to their ancestors. Shuming Dixian, the general of the Lei Department's Inspection Department, led his troops into the Lei Ze realm. Chen Yan, a young monk in the Foundation Establishment Realm who was originally reduced to ashes by the thunder and lightning of Kuiniu, found himself back decades ago.