Writing Balance Rule: Write the horizontal stroke first, positioned high and slightly sloping upward, followed by the vertical hanging hook stroke descending precisely through the center.
1. Meaning
fourth (in a series, Heavenly Stems)
surname Dingmale adultsmall cube of food (e.g., diced meat or vegetables)the 4th of the 10 Heavenly Stems
Tone mark placement: Tone mark sits on "i" per main-vowel priority (a > e > o; in -iu/-ui the mark takes the second vowel).
Initial Consonant
d
Type: Unaspirated Alveolar
Sounds like: d as in 'dog'
Unaspirated
Airflow Tactile Test: No puff of air. Tissue remains still (sounds like English 't' in 'stop').
Tongue & Mouth Position: Tongue tip touches alveolar ridge behind upper front teeth
Final Rhyme
ing
Vowel Group: -i vowel group
Sounds like: -ing rhymes with 'sing'
Mouth Shape Guide: Pronounce as standalone vowel 'eeng'.
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 is a high, level pitch (55) similar to holding out a high musical note or singing a sustained pitch at the top of your vocal range.
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Listening trap: Do not confuse the unaspirated 'd' sound with an aspirated 't', and ensure the nasal ending '-ng' is distinctly pronounced at the back of the mouth rather than dropping into an alveolar '-n'.
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Physical Tone Gesture: Hold a flat, high-pitched horizontal hand gesture in front of your face, matching a steady, ringing bell sound.
3. Writing
Topology: Single character · Strokes: 2 strokes
Writing Balance Rule: Write the horizontal stroke first, positioned high and slightly sloping upward, followed by the vertical hanging hook stroke descending precisely through the center.
4. Components
Radical一 · One / Horizontal Radical (one, horizontal line)
A simple horizontal line on top of a vertical pillar with a hook at the bottom, originally depicting a nail or a standing adult male.
一 top horizontal stroke representing a nail head or cap
亅 vertical hook stroke representing the nail shaft
Phonetic Family (形声字家族)
19· Phonetic Root: 丁 (dīng)
5. History
Liushu category: Pictogram (象形)
Origin: Originally depicted a metal nail or a pin in Oracle Bone script. It later took on the meaning of an adult male and was borrowed to represent the fourth of the Ten Heavenly Stems.
Semantic Evolution: From 'nail' to 'adult male' (sturdy like a nail), then to the fourth Heavenly Stem, and eventually extended to describe small diced cubes resembling small bits of metal or wood.
The Heavenly Stems (天干) have been used for thousands of years in China for chronological counting, divination, and ranking.
6. Sinosphere
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Kanji (Japanese)
On: テイ (tei), チョウ (chō) / Kun: ひのと (hinoto)
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Hanja (Korean)
정
Sound Shift Bridge: The dental stop 'd' in Mandarin often corresponds to voiced stops or dental sounds in cognate systems.
7. Memory
Vivid Mnemonic Story
Imagine a sturdy metal nail (丁) hammered straight into a wooden block, holding up the number 4 banner because it represents the fourth Heavenly Stem.