A worker packs river snail rice noodles in a workshop of Luozhuangyuan Food Co., Ltd. in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Villagers walk in the field carrying wicker baskets full of river snails in Yaolong Village of Rongshui Miao Autonomous County in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 18, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Villagers present wicker baskets full of river snails in the field in Yaolong Village of Rongshui Miao Autonomous County in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 18, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Workers process river snails in a workshop of Luozhuangyuan Food Co., Ltd. in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

A worker processes river snails in a workshop of Luozhuangyuan Food Co., Ltd. in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Workers pack river snail rice noodles in a workshop of Luozhuangyuan Food Co., Ltd. in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

A worker cleans river snails in a workshop of Luozhuangyuan Food Co., Ltd. in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Aerial photo taken on Sept. 18, 2018 shows villagers collecting river snails in the rice field of Yaolong Village of Rongshui Miao Autonomous County in Liuzhou, south China's Guangxi Zhuang Autonomous Region. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

Aerial photo taken on Sept. 18, 2018 shows the scenery in Yaolong Village of Rongshui Miao Autonomous County in Liuzhou, south China's Guangxi Zhuang Autonomous Region. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

A bowl of river snail rice noodles is served at a restaurant in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)

A customer tastes river snail rice noodles in a restaurant of Liuzhou, south China's Guangxi Zhuang Autonomous Region, Sept. 20, 2018. The harvest season of river snails in Liuzhou has begun. In recent years, the promotion of river snail rice noodles benefits over 4,500 impoverished households in Liuzhou. (Xinhua/Li Hanchi)