It doesn't look like an altar, but it is an altar in the first place. That altar is used to refine Xuanhuang Star Continent. I think the Ninth Prince is just like this. He can't even think of refining Xuanhuang Xinglu if he doesn't have several hundred years. Ning Cheng replied that he had studied the formations carefully and had already noticed that the Nine Emperors Peak was composed of top-level sacrificial formations....