Lǎo péngyou jù zài yīqǐ, tiānnándìběi de liáo le yī wǎnshàng.
Old friends got together and chatted about all sorts of things all evening.
Tips
usage
Two distinct meanings: (1) physically far apart — 'on opposite ends of the world'; (2) talking about anything and everything — random, wide-ranging conversation. Context disambiguates.
history
Found in 元好问's 《迈陂塘》 lyric: 天南地北双飞客 — 'a pair of flying companions, from south of sky to north of earth.' The original was about wild geese flying across vast distances.