C297 Lower scrofula(2)

Over-shading, also known as shading in the profession. In the past, there were many Yin Yang Masters who knew Yin Yang. In the past, there were many of them who knew the "Yang", and the "Yang" referred to the people who handled errands for the Underworld ghost servant. Because the Underworld ghost servant was a ghost after all, it was not very convenient to walk around in the mortal world