A proverb popularized by Ming-dynasty vernacular fiction, most famously 《
水浒传》 and 《
警世通言》, and enshrined in the household anthology 《
增广贤文》. The standard pairing is
有缘千里来相会,
无缘对面不相逢 — 'with fate, a thousand li cannot keep two apart; without it, they pass unmet face to face.'