Why doesn't Xiamen Hotel accept Hong Kong, Macao and Taiwan?

It is a rule that tourists from Hong Kong, Macao and Taiwan should stay in foreign-related hotels (star hotels) and ordinary hotels cannot receive them.

In essence, the hotel's business activities are not to produce and sell tangible material products, but to provide an intangible service to the guests with material facilities, and the guests finally get only the utility of a service and the experience of a service process. Therefore, in the hotel's business activities, the process of providing services by the hotel and the process of consuming services by the guests are at the same time and space, and the guests can only enjoy them on the spot, but generally they can't take them away, and the hotel can't inspect the goods in advance and store them afterwards. Of course, there is no patent for intangible services.