Simply put: 1) hotel four-star standards need to have central air conditioning (except for villa resort hotels); 2) background music system; 3) 18 hours to provide foreign currency exchange services; 3) at least 40 (sets) of rooms available for rent; 4-70% of the area of the guest room (excluding the bathroom) is not less than 20 square meters; 5) to provide international Internet access services; 6) bathroom with a telephone vice machine, hair dryer; micro-bar in the guest room; 7) restaurant tableware is configured in sets according to Chinese and Western food habits and is not damaged; 8) buildings above 3 floors have a sufficient number of high-quality passenger elevators, with elegantly decorated carriages; purchase tickets on behalf of transportation, film and theater, and visits, etc.; 9) provide sightseeing services within the city; and 10) be able to provide services in Mandarin and English, and a second foreign language, if necessary. I hope it can help you!