After Long Chen summoned his Yuan Spirit, the power of his blood, bones, and qi flowed into it, causing gold spots to appear on his Yuan Spirit. Those golden spots then gradually formed into primitive runes.

However, an incense stick’s worth of time later, Long Chen was no longer able to endure. Just as he had predicted, the pain of refining the spirit could not be compared to refining the body. There was a qualitative difference between them.

Long Chen's ability to endure bone forging in one go should not be mistaken as an indication that he could undergo full spirit forging in a similar manner. If he attempted it, regardless of its feasibility, the excruciating pain would undoubtedly shatter...