Wild birds rest at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing County covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A wild bird flies over the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

An egret is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

Egrets are seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

Egrets roam at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

An egret flies over the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

Crested ibises are seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A wild duck flies over the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

Fishes swim at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A wild duck flies over the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A crested ibis is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A wild bird is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A lotus flower is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A tourism boat sails at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

Photo shows the scenery of Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A lotus flower is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)

A dragonfly is seen at the Xiazhu Lake National Wetland Park in Deqing County, east China's Zhejiang Province, July 2, 2019. Xiazhu Lake National Wetland Park in Deqing covers an area of some 36.5 square kilometers. As main part of the park, the Xiazhu Lake features zigzag streams and rivers with big-or-small islands spreading over them. With various flora and fauna resources, the original ecological system of the lake is well preserved here. (Xinhua/Lan Hongguang)