Mu Martial Realm

The male lead, Chen Mu, was playing among the flowers with his younger sister when seven streaks of aurora flashed across the sky and carried him to a continent of cultivators in another world. He fights his way forward, battles monsters, and grows stronger, eventually cultivating from the Martial Artist realm to the peak of the Martial Emperor realm. Then he storms the otherworldly Dark Spirit Continent to bring his sister back and establishes the Mu Martial Realm.