大器晚成

dà qì wǎn chéng

lit. it takes a long time to make a big pot (idiom); fig. a great talent matures slowly

in the fullness of time a major figure will develop into a pillar of the state; Rome wasn't built in a day

大

dà

big; large; great

器

qì

device

晚

wǎn

evening

成

chéng

short name for Chengdu 成都[Cheng2 du1]