水面清圆
[shuĭ miàn qīng yuán]
This phrase refers to clear, round water ripples formed when raindrops hit the water surface in a gentle summer breeze during evening time. Derived from the work of Zhou Bangyan, Song Dynasty poet who was good at describing scenes of the seasons through detailed observations of nature. A user of such username implies admiration for classical poets' refined lifestyle and sensibilities; they appreciate natural beauty or wish to present an aloof yet pure personal style.