What is the charging standard for mobile phone charging in China?

The monthly fee for this package is 28 yuan, which includes: 200 minutes of local calls in the network (call the mobile phone in the network, Unicom or telephone, and charge directly outside the package). In addition, we will give a 2250-minute 0 yuan package in M Tribal Area (this is free) and a 100M flow 10 yuan package. If you make up 20 yuan, 30 yuan will get 6500.