Fishermen harvest scallops on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen sort harvested fish on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

A fisherman sails back after a day's work on the sea at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen work on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen work on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen work on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen work on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen work on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

Fishermen sail back after a day's work on the sea at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)

A fisherman sorts harvested fish on an aquafarm at Changhai County in Dalian, northeast China's Liaoning Province, July 8, 2019. Fishermen here are busy collecting scallops and fish as the harvest season comes recently. (Xinhua/Yao Jianfeng)