Three o'clock in the morning, the back alley of the Lyceum Theater in the French Concession. A short gunshot pierced the silent night. Immediately afterwards, a figure rushed out from the depths of the alley in embarrassment and disappeared into the thick fog. When the police patrolling the night arrived at the scene, they saw a man's corpse in a crisp suit leaning against the cold brick wall. The blood gurgling from his chest stained the ground red.