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Jyutping soeng6 sing3
Pinyin shàng xìng

Definitions (Wiktionary)
  1. noun, honorific
    surname of a person
    (syn.) 貴姓, 尊姓, 贵姓
  2. noun, literary
    surname of a prominent family
Examples (粵典–words.hk)
  1. Cantonese
    请喺第一行填上姓名。
    請喺第一行填上姓名。
    ceng2 hai2 dai6 jat1 hong4 tin4 soeng5 sing3 ming4.
    • Please fill in your full name on the first line.