This article tells the story of Xu Youjin, who was successful in his studies and went to Shanghai with his teacher to make a living by boxing and performing arts, and to get in touch with the outside world. An unintentional hero saved the United States and rescued the Japanese spy Yamaguchi Hideko, and established a love. He was deceived by him and the Japanese spy Yamaguchi Taro, and helped them seize the dock. Using his own advantages, he intercepted a batch of Western medicine for the CCP's revolutionary base and destroyed the Japanese Institute of Virology. Later, after Xu Youjin learned the true identities of Yamaguchi Taro and Yamaguchi Hideko, he killed them out of justice. It expresses the patriotic feelings of a passionate young man, thus embodying the love values between men and women.
