Are there any cases of hotels installing cameras in China?

On February 3rd, 65438, Mr. Zhao and his girlfriend stayed in Room 303 of Maidian Theme Hotel in Mudanjiang City, Heilongjiang Province. When they packed their things to leave the next morning, they found something similar to a pinhole camera in the socket on the wall. They looked carefully and found it was a camera. So Mr. Zhao immediately found the person in charge of the hotel and told the police about the pinhole camera in the hotel.