In the cultivation realm, there aren't many rules, because the rules themselves are made by the strong, and they are based on the power they wield. Without their power, nothing could make cultivators across the world adhere to regulations that aren't in their favor.
Cultivators only care about strength and weakness, akin to the bloodiness and savagery of primitive animals. Celestial Sword Mountain was created by an Unparalleled Sword Immortal, one of the Mother Star's mightiest, and itself is one of the rule-makers.
Zhang Kai is a Sword Immortal, if he wants to kill someone, an ordinary person, he needs no reason, and there's no chance evidence will be found to disgrace Celestial Sword Mountain.
Though people and immortals coexist in this age, there's a barrier between them. Mortals can't control immortals, yet immortals overlook humans.
