Lu Ming, Tang Feng, and the others only killed the immortal Dao living beings of the sacred light great cosmos. They didn't touch those below the immortal Dao.
After all, the sacred light great cosmos was incomparably vast and contained billions of living beings. It would be too much to kill all of them.
However, he couldn't just let them go.
Their plan was to suppress all the living beings in the Holy Light great cosmos and make them slaves of the primeval universe. They would also confiscate all their cultivation resources and manuals.
Not killing them was the best way to deal with them.
It was impossible for them not to kill them and let them do as they pleased. When the living beings of the sacred light cosmos rose and experts were born, they would definitely seek revenge.
They were fearless, but what about the others in the primal universe?