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Jyutping hang4 bat1 goi2 sing3 , zo6 bat1 goi2 ming4
Pinyin xíng bù gǎi xìng , zuò bù gǎi míng

Definitions (CC-CEDICT)
  1. see 行不更名,坐不改姓[xing2 bu4 geng1 ming2 , zuo4 bu4 gai3 xing4]