Winter 1939, Nanjing. Chen Fangyu, chief of the clerical section of the Puppet Jiangsu-Anhui Border Area Appeasement Army Headquarters, is the CCP's most lurking agent. He possesses the "Ink Dou System" - he can forge any document from the Japanese army or the puppet army. Every fake transfer order, fake list, and fake pass can accurately strangle an enemy's supply line. But the system comes at a cost: each forgery intensifies his mysophobia, from repeated handwashing to an inability to touch any paper, and eventually a complete breakdown. He successfully allowed Yamamoto Ichiro's transport convoy to drive into the New Fourth Army's ambush circle, and used a fake supply list to provoke infighting between the two waves of puppet armies. But when he walked on the street, people spat at him, his childhood friend broke up with him in the newspaper, and even his mother refused to accept the pension he sent back. He couldn't explain it, and he couldn't explain it - the only one on the line who knew his true identity died trying to cover him in a joint. From then on, the evidence that Chen Fangyu was a traitor was irrefutable, while the evidence that he was a hero of our party was reduced to ashes as it went online. Yamamoto Ichiro, the new consultant of the Special Higher Education Course, began to notice subtle flaws in the documents. A cat-and-mouse game involving the limits of will, intelligence and spirit officially begins in the shadow of the occupied area.
