C280 Gu Poison

"I'm sorry, but there is nothing I can do. Although I can find out that Mr. Niu was poisoned, I can't find out what kind of poison Mr. Niu was poisoned with." Professor Liu looked helpless. He looked at the people from the Niu Family with an apologetic expression.

It was obvious that Professor Liu was a good doctor who could save lives.

"Master Li