Gangsong Leng, Shanghai University, Shanghai, China

Professor Leng has served as a member of the China Mathematics Olympiad Main Examination Committee for the past 20 years. He was coach of the National Training Team of the China Mathematics Olympiad, and director of the CWMO Main Examination Committee.

He was the national team leader of China Mathematics Olympiad in 2007 and the Vice-Leader of China Mathematics Olympiad National Team in 2006 and 2009. During this period, he contributed many test questions for the Chinese Mathematics Competition.

In 2005 to 2006, the Mathematics Trainers' Guild (MTG), Philippines sought the expertise of Prof Gangsong Leng to train Filipino students for their participation in the 2006 Southeast Asia Mathematical Olympiad (SEAMO) which was held in Penang, Malaysia.

From 2006 to 2010, he was selected to be the special training facilitator of the Hong Kong students for the International Mathematics Olympiad.

From 2011 to 2014, he was the guest facilitator of the Macau Team for IMO.