Dots coloured by HSK level · labelled sectors group topics (food, emotions, grammar…) into vertical columns · drag to rotate, hover any dot for a preview
Same mastery rules you'll study under: no hints, real distractors, an explanation after every answer — and every character is one tap from its definition and stroke order.
Same doors a new student sees, the same graph underneath. Pick one, answer a short placement — or take the real adaptive test — and see exactly where you'd land. No signup, no email.
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Not a course you push through regardless of what you've retained. A system built on a century of learning science that only moves you forward when you've actually learned what came before — and takes you all the way to fluency in as little as three months.
Show up and take a free adaptive diagnostic — 20–40 questions, binary-search style, mapping your exact frontier across all 722 topics from HSK 0 to 6. Skip nothing you know; start nothing you're not ready for. No account needed at first.
The system finds topics where every prerequisite is already mastered and serves those first — grammar, vocab clusters, and conversation drills together, each broken into steps small enough to keep cognitive load low. Active recall on every card, never passive reading.
Each topic requires a rep score ≥ 2.0 before its dependents open. Timed quizzes every 150 XP interleave everything you've learned, so retrieval — not recognition — is what earns the unlock.
FIRe-lite decay scheduling surfaces reviews the moment memory is about to slip, spaced and interleaved so knowledge consolidates instead of interfering. Mastered topics layer credit onto what builds on them; failures propagate warnings back down the funnel.
Every word from HSK 1 to 6 drilled in authentic sentences — MCQ, cloze, and sentence ordering. Active recall, never a flashcard you just flip. Each word appears across at least two exercises per topic.
Every HSK grammar point (把-construction, resultative complements, 越…越…, and up through HSK 6 structures) taught with worked examples and tested with graded exercises at three difficulty levels.
2–3 spoken question patterns per topic — the memorize-questions→conversation method. Auto-graded best-response MCQ counts toward mastery; self-rated speak-aloud builds automaticity and fluency.
All 722 topics in one dependency funnel — vocab clusters, grammar points, and skill topics, HSK 0 to 6. Mastering a topic layers partial credit onto what builds on it; failing flags it for review.
10-question, 10-minute quizzes fire every 150 XP, interleaving a broad mix of everything you've learned. Score ≥70% earns a rep bonus; below 70% triggers targeted remediation before new topics unlock.
FIRe-lite: memory decays as a half-life function of your interval. Reviews surface when memory drops below 50%, spaced across sessions so it consolidates. Intervals stretch from 1 day to 120 days as you prove retention.
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A couple of tutor sessions cost more, don't track what you actually retain, and end when the hour does. HSK Mastery is one payment and works every day at the exact edge of what you know — for as long as it takes you to reach fluency.
Start from zero or test in at your level — either way, the graph knows exactly what you should learn next.
Get lifetime access →Drag to rotate · scroll or pinch to zoom · tap a dot · tap a level to isolate it · hover a region label to highlight it
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