It's truly Huangquan, within the Human Domain, it is extremely difficult to encounter Huangquan. At least up to now, Chu Mu still hasn't seen anyone who possesses a Soul Pet Master of one of the five great undying races, which shows just how difficult it is for humans to sign soul contracts with these five great undying creatures.
The most important point is that all five of these undying races have their own civilizations and are the rulers of their thriving realms. They would never live under human subjugation, and even consider their STATUS higher than that of humans, which makes it even more difficult for humans to sign soul contracts with the Netherworld, Huangquan, Hell, Nine Netherworlds, and Naihe.
Had it not been for Chu Mu's special Mutant ability in Mo Ye, who mutated into the Netherworld Fox Sovereign, Chu Mu himself wouldn't have had any chance of truly winning the favor of the five great undying races.
