Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Zhang Duan)

Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Zhang Duan)

Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Huang Bohan)

Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Zhang Duan)

Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Zhang Duan)

Aerial photo taken on July 28, 2020 shows heavy machineries working to build a temporary embankment to prevent possible flood water from a broken sluice gate on the embankment of Daijia Lake in a flood storage area in Yingshang County, east China's Anhui Province. A large number of heavy machineries have been deployed here to build a 600-meter-long temporary embankment on land side of the Daijia Lake embankment to prevent flood water if the embankment sluice gate were broken. (Xinhua/Huang Bohan)