What is the US visa policy for Chinese citizens

GENERAL POLICY: U.S. VISAS ARE REQUIRED AND INTERVIEWED (FACE-MARKED) THROUGH EMBASSIES AND CONSULATES, AND B1/B2 VISAS ARE ISSUED FOR TOURISM BUSINESSES; AN ESTA EXEMPTION IS NOT APPLICABLE TO MAINLAND CHINESE PASSPORTS. COMMON TYPE OF VISA: B1 BUSINESS/B2 TOURIST VISA, F/M STUDENT VISA, H/L, ETC. PROVISIONS FOR STAY: AT THE TIME OF ENTRY, THE PERIOD OF STAY IS DETERMINED BY THE CUSTOMS (CBP) AND IS USUALLY GRANTED UP TO SIX MONTHS IN CATEGORY B; VISAS ARE OFTEN VALID FOR MORE THAN 10 YEARS。