U+4E00 was added to Unicode in version 1.1 (1993). It belongs to the block CJK Unified Ideographs in the Basic Multilingual Plane.

This character is a Other Letter and is mainly used in the Han script. The Unihan Database defines it as one; a, an; alone. Its Pīnyīn pronunciation is y. The codepoint has the Numeric value 1.

The glyph is not a composition. It has a Wide East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 28 other glyphs. In text U+4E00 behaves as Ideographic regarding line breaks. It has type OLetter for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Radical 1 meaning "one" is 1 of 6 Kangxi radicals (214 radicals total) composed of 1 stroke.

In the Kangxi Dictionary there are 42 characters (out of 49,030) to be found under this radical.

Radical 1, in this case known as 橫 héng "horizontal", is one of the eight principles of the character 永 (永字八法 Yǒngzì Bāfǎ) which are the basis of Chinese calligraphy.


System Representation
UTF-8 E4 B8 80
UTF-16 4E 00
UTF-32 00 00 4E 00
URL-Quoted %E4%B8%80
HTML-Escape 一
Wrong windows-1252 Mojibake 一
Encoding: EUC-KR (hex bytes) EC E9
Encoding: JIS0208 (hex bytes) B0 EC
Pīnyīn y
IRG_GSource G0-523B
IRG_HSource HB1-
IRG_JSource J0-306C
IRG_KSource K0-6C69
IRG_TSource T1-4421
IRG_VSource V1-4A2
BigFive A440
CCCII 213021
CNS1986 1-4421
CNS1992 1-4421
EACC 213021
GB0 5027
GB1 5027
Jis0 1676
KSC0 7673
MainlandTelegraph 0001
TaiwanTelegraph 0001
Xerox 241:042

Related Characters

  • ⼀
  • ㆒
  • ㈠
  • ㊀
  • 🈩


  • —
  • ー
  • ᅳ
  • ᅴ
  • ᅼ
  • ᆋ
  • ᆕ
  • ᆖ
  • ᆗ
  • ᆜ
  • ᆣ
  • —
  • ―
  • ─
  • ━
  • ⼀
  • ー
  • ㅡ
  • ㅢ
  • ㇐
  • ㈠
  • 一
  • ꟷ
  • ힹ
  • ힺ
  • ힻ
  • ힼ
  • -


Complete Record

Property Value
Age (age) 1.1
Unicode Name (na) CJK UNIFIED IDEOGRAPH-4E00
Unicode 1 Name (na1)
Block (blk) CJK
General Category (gc) Other Letter
Script (sc) Han
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) None
Decomposition Mapping (dm) 一
Lowercase (Lower)
Simple Lowercase Mapping (slc) 一
Lowercase Mapping (lc) 一
Uppercase (Upper)
Simple Uppercase Mapping (suc) 一
Uppercase Mapping (uc) 一
Simple Titlecase Mapping (stc) 一
Titlecase Mapping (tc) 一
Case Folding (cf) 一
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) 一
Bidi Paired Bracket Type (bpt) None
Cased (Cased)
Composition Exclusion (CE)
Case Ignorable (CI)
Full Composition Exclusion (Comp_Ex)
Changes When Casefolded (CWCF)
Changes When Casemapped (CWCM)
Changes When NFKC Casefolded (CWKCF)
Changes When Lowercased (CWL)
Changes When Titlecased (CWT)
Changes When Uppercased (CWU)
Dash (Dash)
Deprecated (Dep)
Default Ignorable Code Point (DI)
Diacritic (Dia)
East Asian Width (ea) Wide
Extender (Ext)
FC NFKC Closure (FC_NFKC) 一
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Hex Digit (Hex)
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen)
ID Continue (IDC)
Ideographic (Ideo)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Join Control (Join_C)
Jamo Short Name (JSN)
Joining Type (jt) Non Joining
kIICore (kIICore) AGT
kIRG_GSource (kIRG_GSource) G0-523B
kIRG_HSource (kIRG_HSource) HB1-
kIRG_JSource (kIRG_JSource) J0-306C
kIRG_KPSource (kIRG_KPSource) KP0-FCD
kIRG_KSource (kIRG_KSource) K0-6C69
kIRG_TSource (kIRG_TSource) T1-4421
kIRG_VSource (kIRG_VSource) V1-4A2
kIRGDaeJaweon (kIRGDaeJaweon) 0129.010
kIRGDaiKanwaZiten (kIRGDaiKanwaZiten) 00001
kIRGHanyuDaZidian (kIRGHanyuDaZidian) 10001.010
kIRGKangXi (kIRGKangXi) 0075.010
kBigFive (kBigFive) A440
kCangjie (kCangjie) M
kCantonese (kCantonese) jat1
kCCCII (kCCCII) 213021
kCihaiT (kCihaiT) 1.101
kCNS1986 (kCNS1986) 1-4421
kCNS1992 (kCNS1992) 1-4421
kCowles (kCowles) 5133
kDaeJaweon (kDaeJaweon) 0129.010
Unihan Definition (kDefinition) one; a, an; alone
kEACC (kEACC) 213021
kFenn (kFenn) 1A
kFennIndex (kFennIndex) 216.01 217.06 218.01 220.06
kFourCornerCode (kFourCornerCode) 1000.0
kFrequency (kFrequency) 1
kGB0 (kGB0) 5027
kGB1 (kGB1) 5027
kGradeLevel (kGradeLevel) 1
kGSR (kGSR) 0394a
kHangul (kHangul)
kHanYu (kHanYu) 10001.010
kHanyuPinlu (kHanyuPinlu) yī(32747)
kHanyuPinyin (kHanyuPinyin) 10001.010:yī
kHDZRadBreak (kHDZRadBreak) ⼀[U+2F00]:10001.010
kHKGlyph (kHKGlyph) 0001
kJapaneseKun (kJapaneseKun) HITOTSU HITOTABI HAJIME
kJapaneseOn (kJapaneseOn) ICHI ITSU
kJis0 (kJis0) 1676
kKangXi (kKangXi) 0075.010
kKarlgren (kKarlgren) 175
kKorean (kKorean) IL
kKPS0 (kKPS0) FCD6
kKSC0 (kKSC0) 7673
kLau (kLau) 3341
kMainlandTelegraph (kMainlandTelegraph) 0001
kMandarin (kMandarin)
kMatthews (kMatthews) 3016
kMeyerWempe (kMeyerWempe) 3837
kMorohashi (kMorohashi) 00001
kNelson (kNelson) 0001
kPhonetic (kPhonetic) 1499
Primary Numeric Value (kPrimaryNumeric) 1
Radical Stroke Count (Adobe Japan 1-6) (kRSAdobe_Japan1_6) C+1200+1.1.0
Radical Stroke Count (KangXi) (kRSKangXi) 1.0
Radical Stroke Count (Unicode) (kRSUnicode) 1.0
kSBGY (kSBGY) 468.40
Semantic Variant (kSemanticVariant) 弌壹
Specialized Semantic Variant (kSpecializedSemanticVariant) 壹
kTaiwanTelegraph (kTaiwanTelegraph) 0001
kTang (kTang) *qit qit
Stroke Number (kTotalStrokes) 1
kVietnamese (kVietnamese) nhất
kXerox (kXerox) 241:042
kXHC1983 (kXHC1983) 1351.020:yī 1360.040:yí 1368.160:yì
Line Break (lb) Ideographic
Logical Order Exception (LOE)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) 一
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) Numeric
Numeric Value (nv) 1
Other Alphabetic (OAlpha)
Other Default Ignorable Code Point (ODI)
Other Grapheme Extend (OGr_Ext)
Other ID Continue (OIDC)
Other ID Start (OIDS)
Other Lowercase (OLower)
Other Math (OMath)
Other Uppercase (OUpper)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Radical (Radical)
Sentence Break (SB) OLetter
Simple Case Folding (scf) 一
Script Extension (scx) Han
Soft Dotted (SD)
STerm (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) Other
White Space (WSpace)
XID Continue (XIDC)
XID Start (XIDS)
Expands On NFC (XO_NFC)
Expands On NFD (XO_NFD)
Expands On NFKC (XO_NFKC)
Expands On NFKD (XO_NFKD)