Yunnan, Guizhou, Sichuan, Tibet and Guangxi provinces. Starting from 20 16, the national volumes I, II and III were renamed as national volumes A, B and C respectively. Among them, in 20 16, the national volume A (the third volume of the original new curriculum standard) added the volume C (the third volume) on the basis of the national volume A (the second volume) and the national volume B (the first volume). On 20 16, candidates from Guangxi, Guizhou, Yunnan and Sichuan (language and literature) used volume C. On 20 17, the provinces were added: Sichuan (mathematics, English, science and technology) and Tibet. Since 202 1, it has been renamed as the first volume in China, with the same use area; Provinces used since 20021:Yunnan, Guizhou, Sichuan, Tibet and Guangxi. National Grade A subjects: 3+ liberal arts comprehensive/science comprehensive. "3+ liberal arts integration/science integration" mode, each taking 6 subjects and 4 kinds of papers, that is, students taking liberal arts: Chinese, mathematics, English and liberal arts integration, and students taking science and engineering: Chinese, mathematics, English and science integration,