Why does the tourism industry call a room with two beds a standard room?

I found that there are quite a few people asking this question, so it is convenient to reply. It is actually wrong to call a hotel double room a standard room. There is no way to prove why it is so named, but I personally feel that this statement has only appeared in recent years. When the hotel industry first appeared in China more than 20 years ago, it used the traditional name, and the room classification was directly translated from English. For example, a standardroom is a standard room. At that time, the employees who worked as the front desk (FO) or guest room (HSKP) knew that the system used at that time was nothing more than Fidelio(DOS version) and HIS, both of which were English systems, and the following ideas were basically used to name the guest room. STK(standardking/queen Standard Double Room) STT(standardtwin Standard Double Room) DLK(delux Delux Delux Delux Luxury Double Room) S(suite Suite Suite) EDK(executive Executive Floor Big Bed) EDT (Executive Double Bed) is basically studied in the hotel, and other places are the same or similar. There are also some special names, such as studio (equivalent to luxury goods), but there is little difference. The standard room mentioned by the subject is actually the room type after the hotel distinguishes rooms according to different grades (selling prices), and the standard room is the lowest room. The general standard is: standard room.