After the footsteps of two people drifted away, Charlee Ford checked the lock of the room.

It's the kind of lock that is fastened from the outside, which is not difficult to open. She thought for a moment, and pulled out a silver needle from the skirt of her dress skirt, showing a sly smile on her face.

As a Chinese medicine practitioner, silver needles are hidden everywhere all the time.

Some of these silver needles contain anesthesia, while others have nothing. One of the ...