After Time Travel, I Have a Great Mission

He was originally a social animal on earth, but was transported to another world by an antique stall owner. In this world, there are not only martial arts, but also immortals in earth legends. And what is the mission he has to undertake after being transported through time? No one told him. But somewhere down the line, everything is settled. The names and stories in the novel are purely fictitious. Any similarity is purely coincidental. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.