What about the U.S. visa policy for Chinese citizens

GENERAL POLICY: U.S. VISAS ARE REQUIRED AND INTERVIEWED (FACE-MARKED) THROUGH EMBASSIES AND CONSULATES, B1/B2 VISAS FOR TOURISM BUSINESSES, AND ESTA WAIVERS ARE NOT APPLIED TO MAINLAND CHINESE PASSPORTS. COMMON VISA TYPES: B1 BUSINESS/B2 TOURIST VISAS, F/M STUDENT VISAS, H/L WORK VISAS, 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 USUALLY VALID FOR MORE THAN 10 YEARS。