A girl tastes the dishes made of Luosi, a kind of river snail, during a feast held in Jiangba Township of Hongze District of Huai'an City, east China's Jiangsu Province, March 23, 2019. Dishes of Luosi are usually sold at street stalls in China. (Xinhua/Chen Liang)

A server distributes dishes made of Luosi, a kind of river snail, during a feast held in Jiangba Township of Hongze District of Huai'an City, east China's Jiangsu Province, March 23, 2019. Dishes of Luosi are usually sold at street stalls in China. (Xinhua/Chen Liang)

People get together to taste the dishes made of Luosi, a kind of river snail, during a feast held in Jiangba Township of Hongze District of Huai'an City, east China's Jiangsu Province, March 23, 2019. Dishes of Luosi are usually sold at street stalls in China. (Xinhua/Chen Liang)

People get together to taste the dishes made of Luosi, a kind of river snail, during a feast held in Jiangba Township of Hongze District of Huai'an City, east China's Jiangsu Province, March 23, 2019. Dishes of Luosi are usually sold at street stalls in China. (Xinhua/Chen Liang)

Aerial photo taken on March 23, 2019 shows people getting together to taste the dishes made of Luosi, a kind of river snail, during a feast held in Jiangba Township of Hongze District of Huai'an City, east China's Jiangsu Province. Dishes of Luosi are usually sold at street stalls in China. (Xinhua/Wan Zhen)