Is the 7-day hotel chain membership card universal in China?

There are "seven-day chain stores" in major cities all over the country, and universal members of membership cards enjoy the following benefits: 1) Reservation is delayed until 19: ; 2) The check-out time is delayed until 13: ; 3) Enjoy the exclusive room type for members; 4) enjoy the membership price; 5) In-house members can get a box of milk before going to bed with a 7-day commemorative membership card or a second-generation ID card every night; 6) Booking through websites and mobile phones (SMS and WAP) and successful check-in can earn points; 7) Redeem the rich gifts and services provided by 7-day hotel chains with membership points; 8) Get the latest information provided by 7-day hotel chains.