Jīnwǎn hàoyuè dāngkōng, húmiàn bèi zhào de yí piàn yínbái.
Tonight a bright moon hangs in the sky, lighting the lake silvery white.
Tips
usage
Usually after the sun or the moon: 烈日当空, 皓月当空. After a verb it means 'in the sky', as in 毛泽东's line on a rainbow after rain, 谁持彩练当空舞, asking who is dancing a coloured ribbon across the sky.