In these chaotic times, if you want to be a good person or a good corpse, you must be more 'evil' than the evildoers and more 'wicked' than the wicked spirits.
Xu Qing has a very devious mind!
He has been through so much over the years, crawling and rolling, from a small corpse turning the mill to becoming the 'Leader of the Three Religions.' What hasn't he seen?
Xu Qing discovered the answer long ago, that in this wicked world, one must combat evil with evil, and also learn to form alliances and cultivate one's own power.
After all, humans, demons, and monsters all develop underworld forces, emphasizing the high efficiency of group operations. If Xu Qing chose to fight alone, wouldn't he be at a great disadvantage?
When mixing in this world, you must speak of power and background, something that the great deity of the seas taught Shiyue, and Xu Qing found it very reasonable.