A farmer harvests leek flowers in Nanchen village, Zhawang town of Binzhou, Shandong province on Aug 29. Leek flower is a kind of seasoning commonly eaten in China. [Photo/IC]

An aerial photo taken on Aug 29 shows the field of Chinese chives in Nanchen village, Zhawang town of Binzhou, Shandong province. [Photo/IC]

A leek flower [Photo/IC]

An aerial photo of farmers harvesting leek flowers in Nanchen village, Zhawang town of Binzhou, Shandong province on Aug 29 [Photo/IC]

Farmers harvest leek flowers in Nanchen village, Zhawang town of Binzhou, Shandong province. [Photo/IC]

Leek flowers can be processed into sauce. [Photo/IC]