Before declaring war on the Heavenly Corpse Sect, every piece of information regarding them had already been thoroughly investigated, including the exact number of powerful experts they possessed.
As for Wanyuan Zhou before him, he was one of the three great elders of the Heavenly Corpse Sect.
Furthermore, the Heavenly Corpse Sect publicly boasted a total of five cultivators at the Seventh Layer of Divine Martial or above, and the man opposite him was one of them—moreover, one who had reached the level of the Divine Martial Peak.
Chapter 243