There will always be some resentment after death. This has nothing to do with whether the death is natural. It is probably because living people have some fear of death. However, people who die normally have less resentment, while people who die abnormally have more resentment.
The grievances generated after death flowed everywhere. Since the creation of the world in Pangu, the turbid air sank to form the earth. Over time, the grievances flowing everywhere gradually became silent under this vast land that stretched thousands of miles.
Purpose: Self-entertainment