Home » FAQs » 2. How many hours of study are usually needed to prepare for HSK 4?2. How many hours of study are usually needed to prepare for HSK 4? A 2. How many hours of study are usually needed to prepare for HSK 4?On average, 150–200 additional study hours after HSK 3.Regular practice (listening, speaking, reading, writing) is key.Time varies depending on your consistency and background.The course provides structure but daily revision is essential.