Chen Changping, a farmer from the Tianduzhen Village of Sanya City of south China's Hainan Province, harvests rice at the experimental field of hybrid rice developed by Professor Yuan Longping, the country's most noted rice expert.

Chen Changping, a farmer from the Tianduzhen Village of Sanya City of south China's Hainan Province, harvests rice at the experimental field of hybrid rice developed by Professor Yuan Longping, the country's most noted rice expert.

Agricultural experts measure the area for sample collection on May 12 in the pilot field of super hybrid rice in the Tianduzhen Village of Sanya City, Hainan Province.