C186 Assessing That There Was a Spy among the Assassins(1)

Not long after Director Wu left, Singing used the excuse of "going to the bathroom" to go to the bathroom.

He took off his dusty and tattered coat and tied a few coils on his arm, suppressing the blood vessels and preventing the blood from flowing to his entire body.

He used his fingernail to cut open the blood vessels on his arm, and his fingernail left a deep wound. Fresh blood flowed out