People try crayfish at a restaurant in Xuyi county of Huai'an, East China's Jiangsu province, Jan 23, 2018. Crayfish is a renowned specialty in Xuyi county and the demand for the dish increases as the Spring Festival is approaching.[Photo/Xinhua]

A chef shows crayfish at a restaurant in Xuyi county of Huai'an, East China's Jiangsu province, Jan 23, 2018. Crayfish is a renowned specialty in Xuyi county and the demand for the dish increases as the Spring Festival is approaching.[Photo/Xinhua]

Chefs cook crayfish at a restaurant in Xuyi county of Huai'an, East China's Jiangsu province, Jan 23, 2018. Crayfish is a renowned specialty in Xuyi county and the demand for the dish increases as the Spring Festival is approaching.[Photo/Xinhua]

Crayfish is a renowned specialty in Xuyi county and the demand for the dish increases as the Spring Festival is approaching.[Photo/Xinhua]