"There is no such thing that can't be tainted" Chiyou told Prince Xiong Delun
Xiong Delun didn't agree with his words, he said "I dont agree with your words King Chiyou, as I believe that a soul of a person is the most beautiful thing and it can't be tainted.
All the greed, hatred, and other evil emotions end when a person dies, but the soul is immortal and it will come back to life with a new face and a new name.
A soul has no name, or shape, or any desire, it is always clean and it will remain clean forever and ever."
"To be honest I also believed such thing, and before making a visit to a certain place, I also thought that the most beautiful thing in the world and it can't be tainted.
The life we live could be evil or good and all those village desires end when we die... our soul will be clean.
But I was wrong.
I have seen souls still holding evil desires even after their mortal form is finished.