`姻缘` is a cornerstone of how romantic destiny is understood in Chinese culture. It is the specific application of a broader concept, 缘分 (yuánfèn) — the destined affinity between any two people — to the realm of marriage. The most powerful image associated with `姻缘` is the “Red Thread of Fate” (红线, hóngxiàn). According to folklore, the Taoist deity of marriage, 月老 (Yuè Lǎo, the “Old Man Under the Moon”), ties an invisible red thread around the ankles or fingers of two people who are destined to marry. This thread may twist and tangle, but it will never break, ensuring the two will eventually find each other, no matter the time, place, or circumstances.
Even in a rapidly modernizing China, `姻缘` remains a common and cherished concept.