Home HSK Vocabulary HSK 5 治安 治安 zhì ān HSK 5 · C1 Meanings law and order public security Quick facts HSK LevelHSK 5 CEFRC1 ← Back to HSK 5 Overview Practice 治安 with flashcards MandoBridge uses spaced repetition to help you remember HSK 5 vocabulary — free on iOS and Android. ← All HSK 5 vocabulary