Home HSK Vocabulary HSK 2 难题 难题 nán tí HSK 2 · A2 Meanings difficult problem Quick facts Traditional難題 HSK LevelHSK 2 CEFRA2 ← Back to HSK 2 Overview Practice 难题 with flashcards MandoBridge uses spaced repetition to help you remember HSK 2 vocabulary — free on iOS and Android. ← All HSK 2 vocabulary