Writing Balance Rule: The left side (其) is slightly wider and occupies more visual weight, while the right side (土) acts as a solid vertical pillar anchoring the character.
1. Meaning
base or foundation
radical (chemistry)gay (loanword slang in contemporary media)
Bound Form / NounNeutralBound morpheme#architecture#science#foundations
Sample Usage
基础
jīchǔ
foundation, basis
基本
jīběn
basic, fundamental
2. Sound
/[t͡ɕi˥]/Tone: 55
基
jīji1
|
++
¯(55)
=jī
Initial Consonant
j
Type: Unaspirated Alveolo-Palatal
Sounds like: j sound as in 'jeep'
Unaspirated
Airflow Tactile Test: No air puff. Lips spread wide like smiling.
Tongue & Mouth Position: Blade of the tongue touches the hard palate, releasing gently with friction.
Final Rhyme
i
Vowel Group: -i vowel group
Sounds like: ee sound as in 'see'
Mouth Shape Guide: Pronounce as standalone vowel 'ee'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Tone
T1 (55)
5 → 5 (55)
1st Tone (High-Flat)
Tone Pitch & Cadence: Tone 1 stays flat and high at the top of your vocal range, similar to a sustained musical note or a flat robotic hum.
👂
Listening trap: Do not mistake it for jǐ (Tone 3) or jì (Tone 4). Keep the pitch high and even without dipping or dropping.
👋
Physical Tone Gesture: Hold your hand flat at a high, steady level in front of your face, matching the high level pitch of Tone 1.
3. Writing
Topology: Left-right · Strokes: 11 strokes
Writing Balance Rule: The left side (其) is slightly wider and occupies more visual weight, while the right side (土) acts as a solid vertical pillar anchoring the character.
4. Components
Radical土 · Earth Radical (earth, ground, soil)
Semantic Clue (形旁):土 (indicates the physical ground, earth, or foundation)
Phonetic Clue (声旁):其 (original sound: qí / jī)
A solid foundation is built on the earth (土) using a basket or framework structure (其).
其 provides the phonetic sound and part of the structure
土 provides the semantic meaning of earth and physical foundation
Phonetic Family (形声字家族)
17· Phonetic Root: 其 (qí)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally combined the sound-hint element qí (其) with earth (土) to signify a wall foundation or base of a building resting firmly on the ground.
Semantic Evolution: Expanded from literal building foundations in architecture to abstract foundations, chemical radicals, and core fundamentals.
In modern chemistry, 基 is used to translate chemical radicals and functional groups because they form the base units of molecules.
6. Sinosphere
🇻🇳
Sino-Vietnamese
cơ
Mandarin Tone 1 (high level) corresponds to Vietnamese ngang tone (flat high).
🇯🇵
Kanji (Japanese)
On: キ (ki) / Kun: もと (moto)
🇰🇷
Hanja (Korean)
기
Sound Shift Bridge: The historical initial velar/palatal stops align with Sino-Xenic readings like 'ki' in Japanese and 'gi' in Korean.
7. Memory
Vivid Mnemonic Story
To build a strong base (基) for a house, you pack down the earth (土) tightly and lay out your tools inside a square basket framework (其).
Phonetic Family (形声字家族)
期
qīperiod, timeReplaces the earth radical 土 with the moon/flesh radical 月.
棋
qíchess, game pieceAdds the tree/wood radical 木 on the left since chess boards are traditionally wooden.
欺
qīto deceiveAdds the lack/breath radical 欠 at the top right.
Lookalikes & Traps (形近字)
其(qí)
其 is just the top-right phonetic component without the earth (土) foundation at the bottom.
8. Mastery
Active Recall Challenge
我们学习任何一门语言都要打好语音的[___]。
Clue: jī chǔ
Common Learner Pitfall
Confusing 基 (jī) with its standalone component part 其 (qí) or forgetting that 基 requires the Earth radical (土) at the bottom right.
Memory Prompts
Recognition: What does the character 基 mean when you see it in words like 基础 and 基本?
Production: How do you write the character for 'base or foundation' (jī), combining its phonetic and earth elements?
Real-World Video Context
Watch authentic native speakers pronounce and explain this word in real-world YouTube videos.
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基jībase; foundation
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