Decay of the angel!
Li Xiandao knew about it as he had read records about it in the Ten Thousand Country Book Depository.
Celestials were supreme and had eternal life.
If one became a Celestial, even if one was the lowest grade, one's lifespan would be a minimum of 100,000 years.
Those Celestial World experts were young even at a million years old.
In the long annals of time, they would face tribulation too. These tribulations come from different places, some were killing tribulations and some were personal struggles...
Decay of the angel was one of them and it came from within the body.
When one got it, one's body would excrete impurities, one's lifespan would burn, one would lose their sight and senses and their cultivation would weaken.
Once all these steps appeared, a Celestial would reach their end and welcome death.
