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

Summary

Lin Xuan, a skilled mercenary, infiltrates a hotel to track down Yuan Jiamao, a dark web operative. Using hotel surveillance and technical methods, he corners the target in his room. After incapacitating a woman in the room, Lin Xuan confronts Yuan Jiamao, demanding money. Despite negotiating a 20 million transfer, Lin Xuan remains intent on killing him. The encounter reveals complex underground networks, corrupt banking systems, and the mercenary's strategic approach to eliminating targets while extracting maximum financial benefit.

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