This five-character regulated poem is a masterwork of the Tang dynasty.
Tips
culture
One of the two main forms of 近体诗 (regulated poetry). Eight lines, middle two couplets must be parallel (对仗), tones follow a fixed 平仄 pattern, and even-numbered lines rhyme.
usage
Split into 五律 (five characters per line) and 七律 (seven characters per line) depending on line length.