It was not difficult to tell with Chu Yunfan's strength. Whether it was the Left King, the sect master of the Netherworld Sect, or the master of the Mysteries Pavilion, they were the world's top experts. They were all in the intermediate Core Form Stage.
The other middle-aged man and the old woman were slightly weaker, but they were still much stronger than the Right King. They were in the early stage of the Core Form Stage.
Once one entered the Core Form Stage, one would be a kingdom guardian. Chu Yunfan was not afraid of any one of them, but the five of them working together was a very troublesome matter. Therefore, he hid his aura so that others would not be able to discover him, especially in this environment where lightning was flying about.
It was an environment specially prepared for him, allowing him to be like a fish in water.