Lin Mo transmigrates as an outer disciple of the Qingxuan Sect. After six years in the sect, he still hasn't reached the Qi Refining threshold and is known throughout the sect as a good-for-nothing.
As it happens, the original body's owner died in a secret realm from the start. Just after transmigrating, Lin Mo is confronted by a remnant soul that has been dormant for thousands of years, seeking to possess him. It never expected the body to already belong to Lin Mo. After Lin Mo devours the original owner's soul, he suppresses the Supreme Remnant Soul, which is forced to sign a life-and-death curse to stay alive. In exchange, it reveals an ancient, unknown cultivation technique. Having two souls in one body is a necessary condition for cultivation! From then on, the good-for-nothing makes a triumphant comeback. While others venture along the path to immortality alone, the two of them have a thousand years of cultivation experience to fall back on and a modern mind to break through obstacles. One pulls the other out of every trap, and they take turns shouldering tribulations, until together they finally break through the path to eternal life.
I chased it, it was very interesting.