Gong Jianqin glanced at her watch. The thiopental sodium in the coffee should have already taken effect.

Without saying anything to anyone, she quietly left the sales office, took out a black bag from the fire-fighting cabinet in the corner, and walked into the underground parking lot by the elevator corridor. She emptied out her coat, hat, mask, folding knife, and gloves from the bag. She quickly tied up her hair, stuffed it into the hat, checked the edge, and made sure that no hair was exposed.

Then she put on gloves, mask and coat. She looked like an ordinary maintenance worker.

She tested the sharpness of the blade. She was determined to kill. Originally, she had planned to stop after she killed three people in succession and alarmed the police. However, she couldn't bear it. The man surnamed...