Chef Liu Chong cuts pickle as he prepares a dish at a restaurant in southwest China's Chongqing, March 22, 2019. (Photos: Xinhua)

The scale of China's pickle industry topped 4.97 billion yuan ($740 million) in 2017, with a compound growth rate of 7.3 percent in the recent five years.

According to the district government of Fuling in Chongqing, over 600,000 local farmers are involved in the planting of stem mustard -- the raw material for the pickle.

Employees work at a production line in a Fuling pickle factory in southwest China's Chongqing, Feb. 22, 2019.

In 2017, 1.6 million tonnes of stem mustard were produced, which were made into 470,000 tonnes of pickle products worth over 9 billion yuan.

Fuling pickle products have been exported to 57 countries and regions.

Li Wenlin (1st R), an inheritor of the national level intangible cultural heritage Fuling pickle, and his assistant process ingredients at a workshop in Chongqing, southwest China, Feb. 22, 2019.

Women cut stem mustard to produce pickle at a workshop in southwest China's Chongqing, Feb. 22, 2019.

Aerial photo shows a vehicle carrying stem mustard running along a path in Guangfu Village of Fuling District in southwest China's Chongqing, Feb. 21, 2019.

Aerial photo shows workers dehydrating stem mustard, the material for Fuling Pckle, by hanging them on racks in Fuling District of southwest China's Chongqing, Feb. 21, 2019.

Li Wenlin, an inheritor of the Fuling pickle technique, a national level intangible cultural heritage, cuts stem mustard to produce pickle at a workshop in southwest China's Chongqing, Feb. 22, 2019.

Li Wenlin (1st L), an inheritor of the national level intangible cultural heritage Fuling pickle, dries the sliced stem mustard at a workshop in Chongqing, southwest China, Feb. 22, 2019.

A motorcycle carrying stem mustard is seen in Guangfu Village of Fuling District in southwest China's Chongqing, Feb. 21, 2019.

Li Wenlin (L), an inheritor of the Fuling pickle technique, a national level intangible cultural heritage, and his assistant put pickle into a jar at a workshop in Chongqing, southwest China, Feb. 22, 2019.

The scale of China's pickle industry topped 4.97 billion yuan ($740 million) in 2017, with a compound growth rate of 7.3 percent in the recent five years.

Aerial photo shows workers hanging stem mustard used as pickle materials on racks to dehydrate in Fuling District of southwest China's Chongqing, Feb. 21, 2019.

A villager transports stem mustard in Guangfu Village of Fuling District in southwest China's Chongqing, Feb. 21, 2019.