I'm Already Invincible, so You've Just Awakened the System?

[Invincible+Apprenticeship+Development+Easy+System+Not cool article] In the Cangkong Continent, more than three thousand years ago, four doors to the sky suddenly appeared on the edges of the four directions. Yi Sheng'an Shimen was stationed at Nantianmen. At this time, the alien beasts suddenly attacked in large numbers. Except for him, everyone died. A hundred years later, Yi Sheng'an climbed to the top of the Cangkong Continent, passed through the Nantian Gate alone, and entered the world of alien beasts. He fought for more than three thousand years and wiped out the alien beasts in this world. After coming out, he smashed the Nantianmen with a knife. It was at this time that he awakened the system. In order to complete the system tasks, become the way of heaven, resurrect the master and his disciples, and resolutely embark on the road of no return by accepting disciples. It's just that this apprentice's qualifications are not good enough. When will he become the Dao of Heaven?