Treasure Book.

Summary

Su Lan casually checks in on Yue Chen, who has opened an information consulting service. She proposes a meeting to discuss a case involving a missing child, the son of her friend’s sister. Despite initial reluctance, Yue Chen agrees to help, requesting a personal item of the child for better insights. Su Lan reveals her connections, mentioning her friend is the mayor's wife, and warns him to be discreet. The next morning, Su Lan provides background information on a classmate, Cai Tie Jun, who has a troubled past but is skilled in martial arts.

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