Is it really free for 30 days?

Yes! Every new account gets 30 days of full premium access — no credit card required. You get unlimited flashcards, all HSK levels, and full analytics from day one.

What happens after 30 days?

After your free period ends, you can subscribe for $8 USD/month to keep full access. You can also invite friends to earn bonus days — each referral adds extra free time to your account.

How is HSK Lord different from Anki?

HSK Lord is purpose-built for Chinese learners. There's no setup, no hunting for decks, and no configuration. All 5,000+ official HSK words are built in with pinyin, definitions, and spaced repetition — ready to go in seconds.

Can I use it on my phone?

Absolutely! HSK Lord is fully responsive and works great on any device — phone, tablet, or computer. Just open your browser and start studying. No app download required.

What if I already know some Chinese?

Take our free placement test to find your level, or just pick the HSK level that matches your ability. You can start at HSK 1 or jump straight to HSK 6 — it's up to you.

Can I cancel anytime?

Yes, absolutely. There are no contracts or commitments. You can cancel your subscription at any time and you'll keep access until the end of your billing period.

What does 子空间 mean in Chinese?

子空间 (zǐ kōng jiān) means "subspace (math.)" in Chinese.

How do you pronounce 子空间?

子空间 is pronounced "zǐ kōng jiān" in Mandarin Chinese. It is made up of 3 syllables.

What HSK level is 子空间?

子空间 is not part of the HSK vocabulary lists. It may be a specialized or advanced word.

What characters make up 子空间?

子空间 is made up of the characters 子, 空, 间. Each character has its own meaning and can appear in other words.

How do you write 子空间?

You can practice writing 子空间 using our stroke order tool.

子空间 (zǐ kōng jiān) — subspace (math.) | Chinese Dictionary

子空间

zǐ kōng jiān

subspace (math.)

Traditional: 子空間

Characters in This Word

子空间

Definitions

subspace (math.)

Example Sentences

Example sentences coming soon.

→

一一映射(yī yī yìng shè)— bijective map (i.e. map between sets in math. that is one-to-one and onto)

→

一元(yī yuán)— single variable (math.)

→

一次(yī cì)— first

→

HSK & Exam Info

This word is not part of the HSK vocabulary lists.

子空间

Characters in This Word

Definitions

Example Sentences

Related Words

HSK & Exam Info

Frequently Asked Questions

子空间

Characters in This Word

Definitions

Example Sentences

Related Words

HSK & Exam Info

Frequently Asked Questions