C1557 The Factory's Old Man

Every lamp on his shoulders and above his head was swaying, seemingly full of life, but there was a gray aura around the lamps.

This gray aura was the Yin Qi. In other words, the Yin Qi had probably entered their bodies. This was not a good sign. If this continued for a long time, it would not be a good sign. ... Not only would his body slowly weaken, but he would also become weak and ill