Writing Balance Rule: The left radical (water) is narrower and compressed, while the right component is wider and well-balanced, keeping the entire character stable on the centerline.
1. Meaning
ocean
seagreat number of people or thingssurname Hainumerous (dialect)
NounNeutral#nature#geography#water
Sample Usage
我喜欢看海。
wǒ xǐhuān kàn hǎi.
I like looking at the sea.
这个人山人海的集市非常热闹。
zhè gè rénshānrénhǎi de jíshì fēicháng rènào.
This bustling market packed with a vast sea of people is very lively.
2. Sound
/[xaɪ̯²¹⁴]/Tone: 214
海
hǎihai3
|
++
ˇ(214)
=hǎi
Initial Consonant
h
Type: Velar Fricative
Sounds like: h sound like in 'hat'
Unaspirated
Airflow Tactile Test: Gentle throat friction (like fogging glasses on a cold day).
Tongue & Mouth Position: The back of the tongue rises slightly toward the soft palate to create friction, with air exhaled steadily.
Final Rhyme
ai
Vowel Group: -a vowel group
Sounds like: -ai rhymes with 'eye' or 'high'
Mouth Shape Guide: Pronounce as standalone vowel 'eye'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Tone
T3 (214)
2 → 1 → 4 (214)
3rd Tone (Low-Dipping)
Tone Pitch & Cadence: Tone 3 dips low like a skeptical 'Really?' before rising back up in pitch.
Sandhi: When followed by another 3rd tone syllable, hǎi changes to a 2nd tone (rising 35), e.g., 海里 hǎilǐ becomes hái lǐ.
👂
Listening trap: Mistaking Tone 3 for Tone 4 if spoken quickly in rapid native conversation, where the rising second half of the 3rd tone is frequently clipped.
👋
Physical Tone Gesture: Trace a checkmark in the air: start medium-high, dip down low to your chest, and sweep back up high.
3. Writing
Topology: Left-right · Strokes: 10 strokes
Writing Balance Rule: The left radical (water) is narrower and compressed, while the right component is wider and well-balanced, keeping the entire character stable on the centerline.
4. Components
Radical氵 · Water Radical (water)
Semantic Clue (形旁):氵 (Indicates that the character relates to water, rivers, or oceans.)
Phonetic Clue (声旁):每 (original sound: měi)
Water (氵) flows in a continuous every (每) place to form a vast ocean (海).
氵 water radical indicating liquid or aquatic domains
每 provides the phonetic clue 'měi' pointing towards 'hǎi'
Phonetic Family (形声字家族)
12· Phonetic Root: 每 (měi)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally combined the water symbol (氵) on the left with a phonetic element (每) on the right to represent vast expanses of water.
Semantic Evolution: Expanded from literal physical seas and oceans to metaphorically describe anything vast, crowded (like a sea of people), or a personal surname.
In ancient Chinese geography, large lakes and inland seas were also often named as hǎi.
The character has maintained a consistent left-right structure for centuries.
6. Sinosphere
🇯🇵
Kanji (Japanese)
On: カイ / Kun: うみ
🇰🇷
Hanja (Korean)
해
Sound Shift Bridge: The historical pronunciation bridges through ancient sinitic sound groups into neighboring East Asian languages like Japanese 'kai' and Korean 'hae'.
7. Memory
Vivid Mnemonic Story
Every (每) drop of water (氵) joins together to create the endless, roaring sea (海).
Phonetic Family (形声字家族)
梅
méiplumWood radical (木) + every (每) = plum tree.
悔
huǐregretHeart radical (忄) + every (每) = regretting every choice.
敏
mǐnquick, cleverHas a different top structure representing nimble mental agility.
Lookalikes & Traps (形近字)
梅(méi)
梅 uses the wood radical (木) for plum tree, whereas 海 uses the water radical (氵) for the sea.
悔(huǐ)
悔 uses the heart radical (忄) for emotional regret, while 海 uses water (氵).
8. Mastery
Active Recall Challenge
我非常喜欢去看[___]。
Clue: hǎi
Common Learner Pitfall
Confusing the phonetic component 每 with similar-looking graphs or swapping the water radical (氵) with the ice radical (冫).
Memory Prompts
Recognition: When you see 海, what does it mean and how is it pronounced?
Production: How do you write the character for 'sea/ocean' using water and every?
Real-World Video Context
Watch authentic native speakers pronounce and explain this word in real-world YouTube videos.
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海hǎisea
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