Home HSK Vocabulary HSK 4 迅速 迅速 xùn sù HSK 4 · B2 Meanings rapid speedy fast Quick facts HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 Overview Practice 迅速 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android. ← All HSK 4 vocabulary