Tā sānshí suì yǐjīng chéngjiālìyè, ràng jiārén hěn xīnwèi.
At thirty he's already married and established - a comfort to his family.
Tips
history
From Wu Zimu's Song-dynasty 《梦粱录·恤贫济老》: 四方百货,不趾而集,自此成家立业者众矣 - describing how goods from all directions gathered in Hangzhou, allowing many to establish families and livelihoods.
culture
Embodies a traditional life milestone expectation - particularly applied to men, combining family formation with career stability. Often cited (sometimes anxiously) in parent-child conversations about adulthood.