U+6D31 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 a lake in Yunnan. Its Pīnyīn pronunciation is ěr.

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. In text U+6D31 behaves as Ideographic regarding line breaks. It has type OLetter for sentence and Other for word breaks. The Grapheme Cluster Break is Any.


System Representation
UTF-8 E6 B4 B1
UTF-16 6D 31
UTF-32 00 00 6D 31
URL-Quoted %E6%B4%B1
HTML-Escape 洱
Wrong windows-1252 Mojibake æ´±
Pīnyīn ěr
IRG_GSource G0-367D
IRG_HSource HB1-
IRG_JSource J3-7664
IRG_KPSource KP1-515
IRG_KSource K2-403D
IRG_TSource T1-5221
BigFive AC7C
CCCII 21473F
CNS1986 1-5221
CNS1992 1-5221
EACC 21473F
GB0 2293
GB1 2293
JIS0213 1,86,68
Jis1 3925
KPS1 515D
MainlandTelegraph 3167
TaiwanTelegraph 3167
Xerox 263:342


Complete Record

Property Value
Age (age) 1.1
Unicode Name (na) CJK UNIFIED IDEOGRAPH-6D31
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) 洱
Lowercase (Lower)
Simple Lowercase Mapping (slc) 洱
Lowercase Mapping (lc) 洱
Uppercase (Upper)
Simple Uppercase Mapping (suc) 洱
Uppercase Mapping (uc) 洱
Simple Titlecase Mapping (stc) 洱
Titlecase Mapping (tc) 洱
Case Folding (cf) 洱
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) 洱
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) 洱
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) G0-367D
kIRG_HSource (kIRG_HSource) HB1-
kIRG_JSource (kIRG_JSource) J3-7664
kIRG_KPSource (kIRG_KPSource) KP1-515
kIRG_KSource (kIRG_KSource) K2-403D
kIRG_TSource (kIRG_TSource) T1-5221
kIRGDaeJaweon (kIRGDaeJaweon) 1018.060
kIRGDaiKanwaZiten (kIRGDaiKanwaZiten) 17412
kIRGHanyuDaZidian (kIRGHanyuDaZidian) 31602.030
kIRGKangXi (kIRGKangXi) 0622.080
kBigFive (kBigFive) AC7C
kCangjie (kCangjie) ESJ
kCantonese (kCantonese) ji5
kCCCII (kCCCII) 21473F
kCihaiT (kCihaiT) 789.601
kCNS1986 (kCNS1986) 1-5221
kCNS1992 (kCNS1992) 1-5221
kDaeJaweon (kDaeJaweon) 1018.060
Unihan Definition (kDefinition) a lake in Yunnan
kEACC (kEACC) 21473F
kFourCornerCode (kFourCornerCode) 3114.0
kGB0 (kGB0) 2293
kGB1 (kGB1) 2293
kHanYu (kHanYu) 31602.030
kHanyuPinyin (kHanyuPinyin) 31602.030:ěr
kHKGlyph (kHKGlyph) 2172
kJapaneseOn (kJapaneseOn) JI NI
kJIS0213 (kJIS0213) 1,86,68
kJis1 (kJis1) 3925
kKangXi (kKangXi) 0622.080
kKPS1 (kKPS1) 515D
kMainlandTelegraph (kMainlandTelegraph) 3167
kMandarin (kMandarin) ěr
kMatthews (kMatthews) 1747
kMorohashi (kMorohashi) 17412
kPhonetic (kPhonetic) 1546
Radical Stroke Count (Adobe Japan 1-6) (kRSAdobe_Japan1_6) C+16932+85.3.6 C+16932+128.6.3
Radical Stroke Count (KangXi) (kRSKangXi) 85.6
Radical Stroke Count (Unicode) (kRSUnicode) 85.6
kSBGY (kSBGY) 252.14 357.33
kTaiwanTelegraph (kTaiwanTelegraph) 3167
Stroke Number (kTotalStrokes) 9
kXerox (kXerox) 263:342
kXHC1983 (kXHC1983) 0288.010:ěr
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) 洱
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) None
Numeric Value (nv) NaN
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) 洱
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)