Mo Wen had a hundred questions about the perfectly preserved corpse. What was it that could keep a corpse so fresh and prevent it from corroding over a 10,000-year period? Moreover, the corpse was simply sitting over there, without any special techniques or methods of preservation.
If the old man really hailed from 10,000 years ago, there could only be one possibility. It must be the case that his flesh was immortal and could not corrode.
Flesh of such level could only belong to a truly exceptional master. Only people with great magical power could achieve such a feat. For example, the Sect Leader of Divine Pill Sect, where Mo Wen had been in his last life, would probably have flesh that would not corrode after 10,000 years.
Of course, these sort of bodies that would not corrode after 10,000 years were very relative. Perhaps after another few thousand years, they would corrode.