C2310 Never to be Recovered

During his last two dives, Feng Yixiu had come to understand the true limits of his physical body. He deduced that a single dive to a depth of 25 meters would not endanger his life, yet it would allow him to temper his body and bloodline potential to the utmost degree.

Tempering the body is akin to forging a sword; it is not an overnight endeavor but requires prolonged and repeated effort