On the operating table, Japanese poison was spreading in the blood vessels of the wounded guerrillas. Shen Zhenran closed her eyes for three seconds - Daoyun deduction! The tetrodotoxin came from Watanabe, the puppet military doctor. He remained calm and invited Watanabe to the operating table in the name of amputation. When Watanabe was proud, the scalpel accurately cut across the femoral artery: "Sorry, the disinfectant alcohol is not enough." To decipher the Japanese military's financial secret war, tungsten sand was exchanged for medicine, and counterfeit money was bought for information. He used Taoist formations to lay a dragnet. Counterfeit currency collapsed, the black market was liquidated, and three Japanese regiments withdrew from the front line due to supply paralysis. But the deepest traitor has just activated the secret door to his identity - deduction shows that the next piece of top-secret information will be delivered by "Shen Yiran" himself.