良民證 [－－证]

Jyutping loeng4 man4 zing3
Pinyin liáng mín zhèng

Definitions (CC-CANTO)
  1. police clearance certificate; certificate showing no criminal records
Definitions (粵典–words.hk)
  1. 名詞、香港
    無​犯罪​紀錄​證明​書​嘅​俗​稱
    Certificate of No Criminal Conviction
Definitions (Wiktionary)
  1. noun, colloquial
    certificate of no criminal conviction