A Cultivator's Mech

It is the 2150's it was the golden age of human civilization as every country fell under one flag the Human Alliance. But the golden age ended as quickly when aliens from outer space with advanced technology suddenly started invading Earth. Humans were forced to a corner but suddenly a famous scientist created Mechs and gave humanity a way to combat the aliens. With the power of the Mech and human ingenuity, Humanity fought back against the Aliens and took back earth. With this during 2300 the age of interstellar exploration started and this is when Tian Jie a cultivator from another plane of existence appeared on Earth and took the body of a misfortuned youth.