Sect Master of the Mystic Heavens: From Abandoned Disciple to Overlord of the Upper Realm

The protagonist, Lao Erlang, had a successful career in the modern world, but his closest friend betrayed him and caused his wrongful death. He transmigrated to the cultivation world, where he had no spiritual roots and was persecuted by an elder and driven out of his sect. Then he activated the System. As long as he took in disciples, he would receive rewards: cultivation, all kinds of advanced techniques, and divine pills. He took three disciples and founded the Xuantian Sect. Other sects then oppressed him, but the more they pressed, the stronger his sect grew, until it became the largest in the cultivation world. When people from the Upper Realm arrived to take revenge, Lao Erlang immediately led his disciples in an assault on the Upper Realm. Along the way, he also became entangled in a passionate love-hate relationship with the female lead, Fairy Luo Hai.