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 word list Practice 迅速 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android.