Aerial photo taken on May 23, 2019 shows kelps being left to dry on a beach in Xiangdong Village on Daqin Island of Changdao County, Yantai, east China's Shandong Province. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

Aerial photo taken on May 23, 2019 shows kelps being left to dry on a beach in Xiangdong Village on Daqin Island of Changdao County, Yantai, east China's Shandong Province. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

Aerial photo taken on May 23, 2019 shows kelps being left to dry on a beach in Xiangdong Village on Daqin Island of Changdao County, Yantai, east China's Shandong Province. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

Local farmers harvest fresh kelps near the coast of Daqin Island of Changdao County, Yantai, east China's Shandong Province, May 24, 2019. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

Villagers process kelps in Xiangdong Village on Daqin Island of Changdao County, Yantai, east China's Shandong Province, May 23, 2019. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

A local farmer dries kelps in Xiangdong Village on Daqin Island of Changdao County, Yantai, east China's Shandong Province, May 23, 2019. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

Local farmers harvest fresh kelps near the coast of Daqin Island of Changdao County, Yantai, east China's Shandong Province, May 24, 2019. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)

A local farmer dries a sheet of kelp near the coast of Daqin Island of Changdao County, Yantai, east China's Shandong Province, May 23, 2019. There are about 867 hectares of kelp farms near Daqin Island and local kelp farmers are usually occupied with their summer harvest between May and August. In 2018, fresh kelps harvested around Daqin Island amounted to 182,000 tonnes, among which 18,000 tonnes were made into dry kelps. (Xinhua/Zhu Zheng)