Reborn as a demon cultivator, picked up a zombie planet at the beginning

This novel has been adapted into a comic.
Chu Xuan traveled through the Cangxuan world and became a demon cultivator of the Wuji Sect.
The so-called demon cultivation is to plunder the essence of heaven and earth and seize the essence of all things.
Only after slaughtering thousands of people can one become the Great Demon Lord.
However, killing is not tolerated by the human race’s heavenly way.
The Wuji Sect was also destroyed by the righteous sect.
When he was helpless, Chu Xuan accidentally got the blood mirror, which allowed him to go to a doomsday planet full of zombies!
He suddenly discovered that this was a blessed land for demon cultivators!
If he dared to sacrifice millions of mortals, the human race’s heavenly way would lead to thunder and fire, splitting him into slag and burning him into ashes.
But if he sacrificed millions of zombies, not only would there be no disasters, but there would be golden flowers falling, rosy clouds filling the sky, and merits added to his body!
From then on, he would be free from disasters and difficulties, have more blessings and increase his lifespan, and be entangled with luck!
At this moment, Chu Xuan realized!
Demon cultivators are terrible!
Demon cultivators with infinite merits are even more terrible!