Gu Hongda: senior mathematical master teacher, senior coach of the China mathematical Olympiad, former Huangpu District Dean of Education Commission, senior secondary mathematics-teaching experts.
顾鸿达：中学数学特级教师、中国数学奥林匹克高级教练、原黄浦区教育学院院长、资深中学数学教学专家。
Gu Hongda: senior mathematical master teacher, senior coach of the China mathematical Olympiad, former Huangpu District Dean of Education Commission, senior secondary mathematics-teaching experts.
顾鸿达：中学数学特级教师、中国数学奥林匹克高级教练、原黄浦区教育学院院长、资深中学数学教学专家。
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