Traveling Through Another World, Starting from Being Possessed by the Devil

Sun Yan was reborn in a different world with highly advanced technology, and was possessed by the Demon God by accident. Fortunately, the Demon God's power was extremely weak, and he needed someone to help him continue to develop followers in order to increase his power. Until one day, an aerial fortress the size of a city descended on top of the sect founded by Sun Yan. After a blast of destructive laser, the ground was devastated, but Sun Yan and his followers remained intact. Sun Yan pointed at the big guy above his head and said: "Who has time to go up and solve it? It's delaying our meeting."