Operator Connect is an option for providing Public Switched Telephone Network (PSTN) connectivity with Teams and Phone System
China Telecom/China Unicom/China Mobile this 3 major operators is from China Government. All Chinese number number comes from these 3 operators. The phone numbers that can be seen in the market are all from the government, and these 3rd reseller are obtained wholesale from the three major telecom operators
China Government policy is phone number must register under end user company license. and this end user must have china local entity