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A New Puzzle

While Duan Xiaolei, Hu Xiaowei, and Lin Qiusi were discussing a riddle in a private room at a restaurant, Officer Chen arrived with his niece Tan Juanjuan. Tan Juanjuan expressed concern over her missing fiancé, Zeng Shuai, suspecting he might be in danger. Zeng Shuai, a mystery novel writer, had told her he was going on a research trip but later lost contact. Tan Juanjuan received a WeChat message from Zeng Shuai containing numerous punctuation errors, which was uncharacteristic of him. Duan Xiaolei realized these misplaced punctuation marks were actually Morse code for "SOS," suggesting Zeng Shuai might be in distress. They resolved to trace Zeng Shuai’s movements and uncover further clues hidden within the WeChat message.

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