Planning of explosion action in Hongkou Park

In this case, Chen and others, acting president of the Executive Yuan of the National Government and commander of the Songhu garrison, decided to sabotage the celebration by assassination. Chen found a good friend called "Assassination King" and revealed the idea to him. Wang expressed support. However, in order to be prudent, the Japanese side claimed that the Japanese were not allowed to enter the "Zhu Jie Conference", so it was difficult to start. Wang then suggested asking the provisional government of the Republic of Korea in exile in Shanghai to send someone to complete this matter. Wang found An Changhao, the chief of the internal affairs of the interim government, who had a deep friendship with him, raised the matter with him and provided him with 40,000 yuan. An Changhao then met with Jin Jiu, then the police minister of the provisional government of the Republic of Korea. Jin expressed his willingness to undertake this task.

After accepting this task, Jin learned the lesson of Li Fengchang's failure to assassinate Hirohito and made strict bomb preparations. At the same time, Kim found Yin, a young North Korean exiled to Shanghai, to carry out the assassination. Yin, who is familiar with Japanese and determined, immediately agreed to take the lead. On April 26th, Yin joined the Korean Patriotic Army and swore to take a group photo under the Korean flag.