Elder Xu and Chu Ruolin carefully observed for a while and discovered that the sound was coming from the bones inside Chu Yi's body.
The eyes of both widened in astonishment, like copper bells.
"This is too incredible, isn't it? If I'm not mistaken, this should be a secret technique from Barbaric Body Refinement."
Having seen much and known a wide array of techniques, Elder Xu had already realised what was happening.
"Does this secret technique have any other special characteristics?"
From the expression on Elder Xu's face, there seemed to be more peculiarities about it.
Elder Xu did not answer Chu Ruolin, but continued to circle around Chu Yi, looking and listening. After a while, the corners of his mouth also turned up slightly.
"Indeed, there's something different about it; it can heal while it operates on its own. By the time he comes out of the barrel, his pain should also be greatly alleviated."
