鯉魚跳龍門

to make a significant advance in one's career (idiom) / to get one's big break

carp

carp

surname Yu

fish / CL:條|条[tiao2],尾[wei3]

to jump / to hop / to skip over / to bounce / to palpitate

surname Long

dragon / CL:條|条[tiao2] / imperial

Longmen county in Huizhou 惠州[Hui4 zhou1], Guangdong / mythical Dragon gate where a carp can transform into a dragon

gate / door / CL:扇[shan4] / gateway / doorway / CL:個|个[ge4] / opening / valve / switch / way to do something / knack / family / house / (religious) sect / school (of thought) / class / category / phylum or division (taxonomy) / classifier for large guns / classifier for lessons, subjects, branches of technology / (suffix) -gate (i.e. scandal; derived from Watergate)