C54 Blackbeard
In less than five minutes, the customer service personnel arrived. I finally understood that the thief was Ling Qian. In the morning when Ling Qian went into my room, she told the main desk that we were a couple and that she forgot to bring her room card when she went out to buy breakfast. As the room was registered under Ling Qian's name, the main desk sent someone to open the door.
Sigh