Home HSK Vocabulary HSK 4 改善 改善 gǎi shàn HSK 4 · B2 Meanings to make better; to improve Quick facts HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 Overview Practice 改善 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android. ← All HSK 4 vocabulary