Writing Balance Rule: Keep the top bamboo radical (⺮) compact and balanced, allowing the bottom phonetic component (同) to be slightly wider and grounded.
1. Meaning
tube or cylinder
to encase in sth cylindrical such as hands in sleevescylindrical container
NounNeutral#shapes#objects#containers
Sample Usage
笔筒
bǐ tǒng
pen holder
竹筒
zhú tǒng
bamboo tube
2. Sound
/[tʰʊŋ²¹⁴]/Tone: 214
筒
tǒngtong3
|
++
ˇ(214)
=tǒng
Build the syllable
Step-by-step blending
tong
Tone mark placement: Tone mark sits on "o" per main-vowel priority (a > e > o; in -iu/-ui the mark takes the second vowel).
Initial Consonant
t
Type: Aspirated Alveolar
Sounds like: t as in top
Aspirated
Airflow Tactile Test: Explosive puff of breath! Tissue held before mouth MUST flutter.
Tongue & Mouth Position: Tongue tip pressed against the alveolar ridge behind upper front teeth, releasing a puff of air.
Final Rhyme
ong
Vowel Group: -o vowel group
Sounds like: -ong rhymes with rung
Mouth Shape Guide: Combine initial 'h-' (h) with final '-ong' (oong).
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 and rises back up, similar to saying 'What?' in disbelief.
Sandhi: When followed by another 3rd tone syllable, it changes to a 2nd tone (rising 35).
👂
Listening trap: Do not confuse the unvoiced aspirated initial 't-' with the unaspirated 'd-' sound.
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Physical Tone Gesture: Trace an imaginary 'V' shape in the air: dip down from your chest and sweep up to your chin, matching the dipping and rising pitch.
3. Writing
Topology: Top-bottom · Strokes: 12 strokes
Writing Balance Rule: Keep the top bamboo radical (⺮) compact and balanced, allowing the bottom phonetic component (同) to be slightly wider and grounded.
4. Components
Radical⺮ · bamboo radical (bamboo)
Semantic Clue (形旁):⺮ (indicates things traditionally made of bamboo, such as tubes and cylinders)
Phonetic Clue (声旁):同 (original sound: tóng)
A hollow tube (筒) is naturally formed from bamboo (⺮) sharing the same (同) cylindrical shape all the way through.
⺮ bamboo classifier / top radical
同 same / phonetic clue for tǒng
Phonetic Family (形声字家族)
14· Phonetic Root: 同 (tóng)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally combined the bamboo radical (⺮) representing hollow plant stems with 同 (tóng) providing the pronunciation for a cylindrical tube.
Semantic Evolution: Derived from ancient bamboo joints and pipes used for carrying water or holding scrolls, later generalized to any cylindrical container or tube.
Ancient Chinese water pipes and arrow quivers were frequently made from hollowed bamboo stems.
6. Sinosphere
🇻🇳
Sino-Vietnamese
đồng
Mandarin 3rd tone corresponds to Vietnamese hỏi or ngã tone range.
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Kanji (Japanese)
On: トウ (tō) / Kun: つづら (tsuzura)
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Hanja (Korean)
통
Sound Shift Bridge: The ending -ong corresponds to historical -ong rhymes preserved across East Asian Sinitic loans.
7. Memory
Vivid Mnemonic Story
You take a piece of BAMBOO (⺮) and make sure all parts of it have the SAME (同) hollow cylindrical shape, turning it into a sturdy TUBE (筒).
Phonetic Family (形声字家族)
同
tóngsamePhonetic Core (声旁)
洞
dòngcave, hole, zero+ 氵 (water)
铜
tóngcopper+ 钅 (metal)
侗
dòngDong ethnic group (aka Kam people)+ 亻 (person)