Chefs prepare food during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)

A chef prepares food during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)

A chef prepares food during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)

A chef makes pancake dishes during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)

Chefs prepare food during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)

A chef presents his work during a cooking competition in Yinan county of Linyi City, east China's Shandong Province, Dec. 12, 2020. (Photo by Wang Yanbing/Xinhua)