Home / HSK Vocabulary / HSK 4 / 通知书 通知书 tōng zhī shū HSK 4 · B2 Meanings written notice Quick facts Traditional通知書 HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 word list Practice 通知书 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android.