C743 Suspect That One of Them be a Spy

"Bureau chief, wait, there's movement."

Mo Yi and Faan Chengyu were on the 13th floor.

Mo Yi, who was leading the group, suddenly stopped and told Faan Chengyu not to follow. Then he pointed at the policemen behind him, hinting him to go ahead and investigate.

However, Faan Chengyu waved his hand and stopped them. He told them not to make a sound and to listen to the rustling sounds from afar