The Yun brothers took Milan to see his father's body, and Yun Hongshen continued to observe Milan quietly.The Yun brothers stayed at Yang Ziming's house at night. Yun Hongshen took the opportunity to ask Yang Ziming about Kunwu. At this time, Yang Ziming also formally applied to the organization to investigate Kunwu and Bago's intelligence, codenamed “Operation Skynet”.Yun Hongshen and Yang Ziming speculated that there was a Japanese undercover within the military command. Yun Hongshen proposed that he join the military command and join forces with the military commander to find out the undercover agent within the military command, and then follow the clues to find out the murderer of Bago and “Kunwu”, and retrieve the key.But Yun Hongshen encountered difficulties when deciphering the code.In order to investigate the cause of Bago's death, Wen Yeming took Milan away to the hospital, and happened to be met by Yun Hongshen.Yun Hongqi was very anxious when he learned that Milan was arrested. Yun Hongqi did not believe that Milan had any suspicion at all.Yun Hongshen wanted to inquire about some of Bago's living habits from Milan so that he could crack the code book, so he went to the hospital to find Milan, and happened to see Milan being taken away by Wen Yeming.Yun Hongqi was very anxious after learning about it and wanted to save Milan. Yun Hongshen stopped Yun Hongqi because he wanted to verify Milan's identity with the help of military commanders.The two brothers argued about this, and Yun Hongshen gave the military commander two hours to investigate Milan. Once the two hours were up, he went to rescue him.At the military command station, Milan refused to confess and attempted to commit suicide by banging his forehead on the corner of the table. Wen Yeming was unmoved.