HSK 1 → 6 · Mastery learning · reading-first

Everything you must learn, in the only order that works.

Chinese, from zero to mastery, in three months of intense study. Every HSK topic mapped into one dependency graph — each locked until you've mastered what it's built on.

722 topics and 1,500+ prerequisite links, from your first tone to HSK 6. Every link says what must come first, and why. Tap any dot to see everything a learner must master before it.

Start learning — $199 lifetime Try real exercises

FoundationsHSK 1 HSK 2HSK 3 HSK 4HSK 5 HSK 6

Tap a dot · follow its prerequisites all the way back

Try it — real exercises from the live course

One exercise from every level. This is the actual product.

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.

How it works

Mastery learning — the Math Academy method, for HSK 4.

Not a course you push through regardless of what you've retained. A system that only moves you forward when you've actually learned what came before.

一 Step 1 · Diagnose

Free adaptive diagnostic

20–40 questions, binary-search style, maps your exact knowledge frontier across all ~130 HSK-4 topics. Free. No account needed at first.

二 Step 2 · Learn on your frontier

Study at the edge of what you know

The system finds topics where all your prerequisites are mastered and serves you those lessons first — grammar, vocab clusters, and conversation drills together.

三 Step 3 · Prove mastery

Nothing unlocks without evidence

Each topic requires a rep score ≥ 2.0 before its dependents open. Timed quizzes every 150 XP verify retention across everything you've learned.

Hard rule: a topic stays locked until every prerequisite is mastered — no skipping, no workarounds.

四 Step 4 · Never forget

Spaced repetition keeps it alive

FIRe-lite decay scheduling surfaces reviews exactly when memory is about to slip. Mastered topics propagate credit to related topics; failures propagate warnings back up the graph.

What's included

Every modality HSK 4 actually tests.

词

Vocabulary in context

All 600 new HSK 4 words drilled in authentic sentences — MCQ, cloze, and sentence ordering. Every word appears in at least two exercises per topic.

法

Grammar mastery

~60 grammar points (把-construction, resultative complements, 越…越…, and more) taught with worked examples and tested with graded exercises at three difficulty levels.

说

Conversation drills

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 fluency.

图

Knowledge graph

~130 topics in a dependency DAG — vocab clusters, grammar points, and skill topics. Mastering a topic propagates partial credit to related ones; failing flags them for review.

测

Timed quizzes

10-question, 10-minute quizzes fire every 150 XP. Score ≥70% earns a rep bonus; below 70% triggers a targeted remediation task before any new topics unlock.

记

Spaced repetition

FIRe-lite: memory decays as a half-life function of your interval. Reviews surface when memory drops below 50%. Intervals stretch from 1 day to 120 days as you demonstrate retention.

掌握

Early access · founding member price

^$199

lifetime access · one payment, yours forever

or $19/month · cancel anytime

Adaptive diagnostic — maps your exact HSK 4 frontier
~130 topics: 60 grammar + 55 vocab clusters + skill topics
600 new words in context — every HSK 4 word drilled
Conversation drills: question patterns + best-response MCQ
Timed quizzes with targeted remediation
FIRe-lite spaced repetition — nothing fades quietly
Daily XP goal (default 20 XP) + streak tracking

Secure checkout by Stripe · instant access · founding-member pricing

Less than one tutoring hour per month — with a system that never forgets what you need to review.

A single tutor session costs more, doesn't track what you actually retain, and ends when the hour does. HSK Mastery works every day at the exact edge of what you know.