C991 A Stone Door
Physician Ouyang's corpse must have been taken away by the two men in black. It was highly possible that they had left through this passageway. If they continued tracking him, they might be able to retrieve Physician Ouyang's corpse.
He didn't have a deep relationship with Physician Ouyang, but he knew that Physician Ouyang was a good man. At least, Ye Bufan wouldn't harm him