World Food Day marked at primary school in Shijiazhuang, N China's Hebei(1/8)

Pupils learn to recognize grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Liang Zidong)

A boy shows a painting made of grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

Pupils take part in a corn shelling competition in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

A girl shows a painting made of grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

Pupils learn to recognize grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

Pupils take part in a corn shelling competition in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

A boy takes part in a corn shelling competition in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)

A teacher gives a lesson of paddy rice in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)