Space Immortal Emperor Invades the City

The protagonist is a junior student at Qingbei University. While climbing Changbai Mountain with his classmates, he was pushed off the cliff by a rich man. He accidentally fell into a rift in time and space and disappeared from the earth for seven full years. No one knows what he went through in the past seven years! When he returns again, he is already a generation of Immortal Emperor with the world in his hands and the sun, moon and stars under his feet! Refining elixirs, refining weapons, setting up formations... I'm already proficient in everything! Let's see how Yu Tian lives his life in the city!