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 word list Practice 治安 with flashcards MandoBridge uses spaced repetition to help you remember HSK 5 vocabulary — free on iOS and Android.