幸运 (xìng yùn) literally combines 幸 (xìng), meaning 'happiness' or 'blessing', and 运 (yùn), meaning 'fate' or 'circumstance'. Together, they express the idea of favorable fate — something positive that happens without deliberate effort, often attributed to chance or divine favor. It functions as both a noun ('good luck') and an adjective ('lucky'), commonly used in everyday speech to describe people, events, or outcomes.

You’ll hear 幸运 in contexts like wishing someone well before an exam ('祝你好运!' — 'Good luck!'), describing fortunate coincidences ('真幸运，刚好赶上末班车' — 'How lucky — I just caught the last bus!'), or expressing gratitude for unexpected blessings. Unlike the more formal or literary 运气 (yùn qì), 幸运 feels warmer and more personal, often implying emotional relief or joy rather than neutral fortune.