'A lone plume rising over the great desert; the sun round above the long river' is a famous couplet of frontier poetry.
Tips
history
Second line of Wang Wei's (王维, Tang dynasty) 《使至塞上》 ('Mission to the Frontier'): 大漠孤烟直,长河落日圆. Written in 737 on a commission to the Hexi frontier; the couplet is routinely ranked among the finest visual compositions in Chinese poetry.
usage
Always cited together with its paired line 大漠孤烟直. 长河 is usually read as the Yellow River; the image turns on the near-perfect circle of a sun pinned against a horizontal expanse of water.