The National College Entrance Examination Mathematics Volume B, according to the query of Weibo, official website, was written by Cao Haitao in 2022. In his test paper, there are many mathematical knowledge and concepts that candidates usually don't come into contact with. Because of the difficulty, they boarded the hot search in Weibo, so it is difficult for Cao Haitao to write the national college entrance examination mathematics B volume. Cao Haitao, a senior two math teacher and researcher at Jiangsu Academy of Educational Sciences, is the vice chairman of Nanjing Mathematical Society, a member of the Professional Committee of Applied Mathematics of Chinese Mathematical Society, and one of the well-known experts in mathematics education in China.