'好事' literally combines 好 (hǎo, 'good') and 事 (shì, 'matter' or 'event'), forming a compound noun meaning 'a good deed' — an act of kindness or moral virtue — or 'an auspicious event', such as unexpected good fortune or a joyful occasion like a wedding or promotion. The term carries positive emotional weight and is often used in both concrete and abstract contexts.

In daily usage, '好事' frequently appears in expressions like '做好事' (to do good deeds) or '碰上好事' (to happen upon good luck). It can also appear idiomatically, as in '好事多磨' (good things take time), reflecting cultural values around patience and virtue. While generally positive, context matters: in informal speech, it may occasionally carry playful or teasing connotations — for example, when someone is caught planning something secretly, others might jokingly say '又在打什么好事？' ('What 'good thing' are you scheming now?').