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

Summary

Summary: A French DGSE official named Mac is pursued by mysterious assassins after revealing details about stolen magnetic levitation technology documents. Lin Xuan, a Dragon Kingdom operative, saves Mac from initial assassination attempts but cannot prevent his wife's murder. Mac discloses critical information about an insider theft involving a researcher who was working with foreign spies. Before dying from grenade attacks, Mac suggests the theft was likely orchestrated by a high-ranking DGSE deputy director to frame the Dragon Kingdom, with Lin Xuan promising to seek revenge.

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