Half Piece of Jade

In the winter of 1952, there was heavy snow. A bloody man fell at the door of the Public Security Bureau, clutching half a piece of broken jade, and uttered two words: The wind is blowing. Investigator Fang Tao recognized that this was his comrade who had broken into the enemy's agent organization. The jade pendant is a token of contact with the enemy, and the code word means that the sabotage operation has been launched. The comrade did not expose himself—someone betrayed him. The betrayer is inside the Public Security Bureau, codenamed Shopkeeper. Fang Tao holds half a piece of broken jade, facing the spy network that has been dormant for three years, the upcoming full moon night, and the invisible eyes around him. Where is the other half of the jade pendant? Who is the "shopkeeper"? Power plants and oil depots across the city have been marked as explosion points, and the time is counting down. The snow is getting heavier and heavier, and a secret war has begun. This is not a battle of muzzle against muzzle, but murderous intent hidden in every shadow.