After Traveling Through Time, He Took the Fake Daughter with Him to Kill the Aliens.

Mu San traveled through time to a world of high martial arts, where the war between humans and aliens lasted for hundreds of years. Just when Mu San imagined that he could flex his muscles and achieve an invincible existence, under the operation of the unscrupulous system, he became an outlaw spirit who illegally stayed in other people's bodies. At this point, Mu San and this girl named Su Yuyu started their own teacher life. Why a teacher? That's naturally because the function of the unscrupulous system is personality modification, and they can only gain power by transforming the personalities of those delinquent teenagers. As for why you can't practice on your own? So who are they to call them brothers? One is a lonely ghost, the other has suffered from soul-leaving syndrome since childhood, and his cultivation is slower than a tortoise. How can he defeat the alien race with such a speed of cultivation? !