In the spring of 1940, Wang Jingwei, the former vice chairman of the Chinese Kuomintang, made peace with the Japanese government and established a new "National Government" in Nanjing. Since then, the War of Resistance against Japan has entered a new period of "Three Kingdoms". Wang Jingwei's Nanjing National Government, Chiang Kai-shek's Chongqing National Government, and the Shaanxi-Gansu-Ningxia Border Region Government led by Mao Zedong were three pillars, each managing their own affairs and restraining each other. After Wang Jingwei took office, he launched three major policies, and at the same time lured frustrated Chiang to send military and political officials into the cabinet.
On October 10, 1942, at a grand ceremony held by the Wang puppet government to celebrate the 30th anniversary of the founding of the Nationalist Government, an important member of the Wang puppet government was shot and killed. This matter has attracted great attention from the Japanese side. Takeda, the head of the Japanese spy agency, suspected that this series of assassinations was planned by Lao Gui, the leader of the Communist Party in the Beiping area, and hoped that his organization would be completely uncovered through an investigation.
Takeda investigated that the old ghost responsible for sending the order was lurking in the Bandit Suppression Command, so he took the five suspects who were most likely to have access to the telegram to the closed Qiu Zhuang. Wu Zhiguo, captain of the puppet army and bandit suppression team, Bai Xiaonian, commander of the puppet army bandit suppression team, Li Ningyu, leader of the translation team of the puppet army bandit suppression headquarters, Gu Xiaomeng, administrative dispatcher of the puppet army bandit suppression headquarters, and the puppet army bandit suppression team. Jin Shenghuo, director of the Military Aircraft Division.
The investigation period was only five days, and Takeda had to resort to various means and even brutal torture to find the old ghost. In order to protect themselves, the five people under house arrest are also carefully observing the other four people around them, hoping to find the old ghost as soon as possible so that they can leave Qiu Zhuang safely
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