Home HSK Vocabulary HSK 4 系统 系统 xì tǒng HSK 4 · B2 Meanings system Quick facts Traditional係統 HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 Overview Practice 系统 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android. ← All HSK 4 vocabulary