water managment ?

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Chenggong 成功 20210225_084836

water managment ?

Camera/lens: SM-A205GN
Aperture: 1.9, Shutter speed: 1/235, Focal length: 3.6 mm, ISO: 40, Bias: 0
Date/Time: 2021:02:25 08:48:34
Average color: gray34