"Gu poisoning?" Qin Lan's expression changed; she seemed to understand something, yet not completely. "Ye Chen, what is a Gu?"
"Gu is an extremely yin and evil thing. Its forms are myriad, and the methods of deploying Gu are numerous; they can kill a person without a trace, allowing them to die without knowing how they died!" Ye Chen said in a deep voice. "Different Gu have different functions. They have been probably stricken by a type of Gu that devours vital essence, consuming their vitality and causing them to age and die in a very short time!"
"However, Gu Masters are extremely rare in this world, and even fewer can deploy Gu without anyone noticing. I don't know whom they have offended to have a Gu Master act against them!" Ye Chen's tone was grave, his face full of solemnity.
Gu Masters are an extremely bizarre existence; such people pose a great threat as they can kill someone from thousands of miles away using a Gu.
