That was right!
The flesh had turned to ash, leaving behind a Black Bone.
Old Man Wuchuan gave a bitter smile and said, "After Ren Xin and I discovered the clue on the Second Prince's bones, we were both stunned. It was exactly the same as the First Prince's."
"Afterward."
"After we sealed the Second Prince's mausoleum, we returned to the Celestial Mystery Pavilion and began our investigation."
"There are countless rare poisons in this world. After they are ingested, the flesh turns to ash and the bones turn black. There are at least eighty thousand of them, if not a hundred thousand."
"Many rare poisons leave behind the same condition as the First Prince and Second Prince."
"But there was one thing the others did not share."
"That was, no trace of any deadly poison could be detected inside the First Prince or Second Prince!"
"So."
"We seized upon this point and began investigating in secret."
"Finally, we found a thread of evidence. We learned that the Southern Border Insect Valley possessed a rare poison called the 'God-Devil Calamity.' It was one of the seventy-five king poisons of the Southern Border Insect Valley. It was colorless and odorless, resembling a wisp of smoke."
"Most importantly... after this poison caused a martial artist's death, it would leave behind not the slightest trace of poison in his body."
"Afterward, Ren Xin and I went to the Southern Border Insect Valley under the pretext of searching for divine iron. After making inquiries through various channels, we finally confirmed... that the First Prince and Second Prince had died from the God-Devil Calamity."
"Martial artists who died from the God-Devil Calamity would have their flesh turn to ash within fifteen days, leaving behind a Black Bone."
"Thus, in the Southern Region, this poison was