Stroke order, etymology and audio for every word.Start learning
在于 — pronunciations, definitions, and tags
Hanzi
Pinyin
English
Tags
在于
zàiyú
to be in
HSK 5, v, 9 strokes, rank #2158, Hard
在于
zàiyú
to lie in
HSK 5, v, 9 strokes, rank #2158, Hard
在于
zàiyú
to consist in
HSK 5, v, 9 strokes, rank #2158, Hard
在于
zàiyú
to depend on
HSK 5, v, 9 strokes, rank #2158, Hard
在于
zàiyú
to rest with
HSK 5, v, 9 strokes, rank #2158, Hard
zàiyú(zai4yu2)zai yu T4
1to be in
2to lie in
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026
在于(在於)zàiyú(zai4yu2)
在于 (zài yú) is a verb that indicates the existence or essence of something, often used to express that something depends on or is determined by another factor. Commonly used in contexts discussing the nature of relationships, qualities, or conditions, it emphasizes the importance of a specific aspect in a broader situation.
Strokes9Frequency#2158DifficultyHard
Cultural note
The phrase 在于 is often used in philosophical discussions in Chinese culture, emphasizing the importance of understanding the underlying factors that influence decisions and relationships. This reflects a deeper, holistic view of life that values context over isolated viewpoints.
Memory tip
Imagine a person standing in a circle (在, zài) where they must determine what is at the center (于, yú). The circle represents the various factors that define the essence of a situation, helping you remember that 在于 means to depend on or consist in something important.
Meanings of 在于
zàiyú(zai4yu2)
1to be in
2to lie in
Exercise 1 of 2
By ear
Play it, then pick what 在于 means.
About 在于
在于Simplified
在於Traditional
9Strokes
—Radical
动词dòngcíverb (v.)Part of Speech
#2158Frequency Rank
HSK 2.0L5HSK 3.0L5IntermediateTOCFLL4HSKKL2CEFRB1
Podcast: 在于
Podcast: 在于
Listen to Jason & Amy break down this word for you
New here?
AI study notes for 在于
Quick Contrast
依赖于 (yīlàiyú) — use 在于 when emphasizing the essence or nature of something, while 依赖于 focuses on dependence.
Usage Notes
Be careful not to confuse 在于 with other similar phrases that indicate location or existence. It is more formal and often used in written contexts, so avoid using it in casual conversation unless appropriate. Common collocations include '关键在于' (the key lies in) and '问题在于' (the problem lies in).
HSK Study Tips
At HSK Level 5, students should focus on understanding how 在于 connects concepts and relationships. It often appears in discussions on philosophy, literature, and social issues, making it essential for deeper comprehension of these topics. Practice using it in sentences to reinforce its usage.
Common Mistakes
Learners often mistakenly use 在于 to indicate physical location, such as '我在于学校' (I am in the school), which should be '我在学校' (wǒ zài xuéxiào). Remember, 在于 emphasizes dependency or essence, not mere presence.
AI-enhanced 2026-03-24
Pronunciation of 在于
Premium — Locked
Tone practice
Pro
Drill the tone of 在于, say it back, see your pitch against the model voice, and earn XP towards mastery. Interactive tone practice is part of Pro.
Jason looks at what you watch and listen to, the checkpoints you have cleared, our lessons and what you have been exploring, and explains 在于 through them.
Sign in free to make it personal. New accounts start with 200 AI credits.
How well do you know 在于?
Example
Learning Lab
Knowing 在于 is seven skills, not one.
Its meaning, its character, its pinyin, its tone — hearing it, saying it, writing it. The Learning Lab measures each one from your own practice, on every word you study, so you see what you actually know rather than how much you have done.
在于 (zài yú) is a verb that indicates the existence or essence of something, often used to express that something depends on or is determined by another factor. Commonly used in contexts discussing the nature of relationships, qualities, or conditions, it emphasizes the importance of a specific aspect in a broader situation.
When to use 在于
Be careful not to confuse 在于 with other similar phrases that indicate location or existence. It is more formal and often used in written contexts, so avoid using it in casual conversation unless appropriate. Common collocations include '关键在于' (the key lies in) and '问题在于' (the problem lies in).
在于 or something close to it
依赖于 (yīlàiyú) — use 在于 when emphasizing the essence or nature of something, while 依赖于 focuses on dependence.
What learners get wrong
Learners often mistakenly use 在于 to indicate physical location, such as '我在于学校' (I am in the school), which should be '我在学校' (wǒ zài xuéxiào). Remember, 在于 emphasizes dependency or essence, not mere presence.
Write 在于
在
于
New here? to save your writing progress and earn XP.
Practice writing 在于 stroke by stroke. Watch the animation to learn the stroke order, then try writing it yourself.
Write correctly 3 times to earn XP
Grammar patterns of 在于
在于 functions as a verb — the action or state of the sentence. The Chinese order is Subject + Verb + Object (我吃饭). Negate it with 不 (habitual / future) or 没(有) (completed action). Add aspect markers like 了, 过, 着 directly after the verb. It carries 5 related meanings, each with its own usage notes below. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.
