Solving the Case is Slightly Bitter, My Sister is Super Sweet.

Summary

In this intense police investigation, Lin Xuan discovers a massive hidden treasure of over 130 million in an apartment, along with an account book revealing financial details across 21 cities. A laptop with a secret system belonging to the Beggar Gang's Dragon Head is found, with fingerprints not matching Yang Qiang. The investigation leads to suspicion that Yang Qiang's brother, Yang Long, might be the Dragon Head. Lin Xuan senses something unusually convenient about the entire investigation, believing someone is manipulating events behind the scenes, setting up a complex and mysterious scenario.

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