The special development class of famous teacher Xiao Shengchu is a special advanced class of famous teacher Xiao Shengchu, which is quite difficult. Peng Ze, male, Han nationality, from Wan 'an, Jiangxi, is now the main teacher of mathematics in primary schools. Proposer of national cup and junior high school exam, master of Chinese Academy of Sciences, expert of mathematical thinking training in primary schools, founder of Beijing Yousiyuan Education, co-founder of Chengdu Keya Mathematics, 16 years of mathematics teaching experience, covering all grades of primary school, junior high school and senior high school.