認祖歸宗 [认－归－]

Jyutping jing6 zou2 gwai1 zung1
Pinyin rèn zǔ guī zōng

Definitions (粵典–words.hk)
  1. 動詞
    揾​返​自己​血緣​同​故鄉
    to recognize or affirm one's ancestry
Definitions (Wiktionary)
  1. phrase, idiomatic, of someone who lives in a foreign place
    to return to one's ancestral home
  2. phrase, idiomatic, of an adopted child
    to find and acknowledge one's ancestors and restore their original surname