Decades of rising productivity ensure food security

Scientific breakthroughs and new technology have overcome the challenge of feeding the world's largest population. Wang Xiaoyu reports.

Editor's note: To celebrate the 70th anniversary of the founding of the People's Republic of China, we are publishing a series of stories reflecting on changes and developments in fields such as law, education, transportation and the environment. This is the fifth in the series.

From the sweet potato fields of North China, where agricultural machinery digs up the root vegetable, to the golden-tan rice terraces and crimson grapes hanging from vines in the southwest, the autumn harvest is in full swing across the country.