From the protagonist's perspective, it depicts the terrifying scene of witnessing a pair of puppets nailed to the gate at Handong Middle School. The protagonist realizes that this may be a trap, as someone is monitoring and he feels extremely dangerous. He covered himself with a hat and scarf, forcing himself to leave the scene. During the escape, he felt extreme grief and anger, tears and bitten lips witnessing his emotional fluctuations. In the end, he escaped to a hidden cave, which was his refuge when he was young and a symbol of his emotional connection with the master. In the cave, he released his suppressed emotions, shouted loudly, and expressed his inner pain and struggle.

Modern Spring

In the restaurant, everyone fell silent due to Zeng Shuai's text message. Officer Chen and Officer Duan contacted their colleagues to find Zeng Shuai. Duan Xiaolei pointed out the hidden information in the text message, pointing out that punctuation errors and abnormal arrangement of bank card numbers may be clues. He explained that the pinyin errors and numerical arrangement in the text message suggest the use of a mobile phone's nine grid keyboard for interpretation. By grouping numbers and corresponding them to a nine grid keyboard, hidden information can be interpreted.