C87 That's not an illness yin and yang gu!

At this moment, everyone's three senses seemed to have crumbled.

If this kind of strange illness wasn't considered an illness, then what was an illness?

"Have you heard of Gu?" Seeing everyone's reaction, Jun Lingyan muttered to herself for a bit, then slowly asked.

Gu. When the word came out, everyone including Yun Chenjing's face changed.

It was as if everyone present abhorred this word