C1153 Lao Cang's past?

Amongst the crystal coffin, the Blue Wave Fairy was splattered with blood everywhere. Blue Wave Fairy's mouth was slightly agape, and from time to time, she spat out a mouthful of red blood.

This situation made Fang Shaobai nervous, she truly could not understand how could something like this happen.

According to Lao Cang, this was an absolute sleep that could only be performed by a Sovereign