U+6731 CJK UNIFIED IDEOGRAPH-6731
U+6731 was added to Unicode in version 1.1 (1993). It belongs to the block 
This character is a Other Letter and is mainly used in the Han script. The Unihan Database defines it as cinnabar, vermilion; surname. Its Pīnyīn pronunciation is zhū.
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+6731 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:
Zhu is the pinyin romanization of four Chinese surnames: 朱, 祝, 竺, and 諸. It is spelled Chu in the Wade-Giles romanization system mainly used in Hong Kong, Macau and Taiwan.
The most common of the four, 朱, was the surname of the Ming Dynasty emperors. Today it is the 13th most common surname in the People's Republic of China, with a population of over ten million.
Representations
| System | Representation |
|---|---|
| Nº | 26417 |
| UTF-8 | E6 9C B1 |
| UTF-16 | 67 31 |
| UTF-32 | 00 00 67 31 |
| URL-Quoted | %E6%9C%B1 |
| HTML-Escape | 朱 |
| Wrong windows-1252 Mojibake | æ± |
| Encoding: EUC-KR (hex bytes) | F1 B9 |
| Encoding: JIS0208 (hex bytes) | BC EB |
| Pīnyīn | zhū |
| IRG_GSource | G0-566C |
| IRG_HSource | HB1- |
| IRG_JSource | J0-3C6B |
| IRG_KPSource | KP0-E9E |
| IRG_KSource | K0-7139 |
| IRG_TSource | T1-4837 |
| IRG_VSource | V1-593 |
| BigFive | A6B6 |
| CCCII | 21436F |
| CNS1986 | 1-4837 |
| CNS1992 | 1-4837 |
| EACC | 21436F |
| GB0 | 5476 |
| GB1 | 5476 |
| Jis0 | 2875 |
| KPS0 | E9E8 |
| KSC0 | 8125 |
| MainlandTelegraph | 2612 |
| TaiwanTelegraph | 2612 |
| Xerox | 251:171 |
Elsewhere
Complete Record
| Property | Value |
|---|---|
| Age (age) | 1.1 |
| Unicode Name (na) | CJK UNIFIED IDEOGRAPH-6731 |
| 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) |
 |
| Lowercase (Lower) | ✘ |
| Simple Lowercase Mapping (slc) |
|
| Lowercase Mapping (lc) |
|
| Uppercase (Upper) | ✘ |
| Simple Uppercase Mapping (suc) |
|
| Uppercase Mapping (uc) |
|
| Simple Titlecase Mapping (stc) |
|
| Titlecase Mapping (tc) |
|
| Case Folding (cf) |
|
| ASCII Hex Digit (AHex) | ✘ |
| Alphabetic (Alpha) | ✔ |
| Bidi Control (Bidi_C) | ✘ |
| Bidi Mirrored (Bidi_M) | ✘ |
| Bidi Paired Bracket (bpb) |
|
| 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) |
|
| Grapheme Cluster Break (GCB) | Any |
| Grapheme Base (Gr_Base) | ✔ |
| Grapheme Extend (Gr_Ext) | ✘ |
| Grapheme Link (Gr_Link) | ✘ |
| 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) | ✘ |
| InMC (InMC) | — |
| 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) | G0-566C |
| kIRG_HSource (kIRG_HSource) | HB1- |
| kIRG_JSource (kIRG_JSource) | J0-3C6B |
| kIRG_KPSource (kIRG_KPSource) | KP0-E9E |
| kIRG_KSource (kIRG_KSource) | K0-7139 |
| kIRG_TSource (kIRG_TSource) | T1-4837 |
| kIRG_VSource (kIRG_VSource) | V1-593 |
| kIRGDaeJaweon (kIRGDaeJaweon) | 0893.040 |
| kIRGDaiKanwaZiten (kIRGDaiKanwaZiten) | 14424 |
| kIRGHanyuDaZidian (kIRGHanyuDaZidian) | 21154.030 |
| kIRGKangXi (kIRGKangXi) | 0509.130 |
| kBigFive (kBigFive) | A6B6 |
| kCangjie (kCangjie) | HJD |
| kCantonese (kCantonese) | zyu1 |
| kCCCII (kCCCII) | 21436F |
| kCihaiT (kCihaiT) | 668.201 |
| kCNS1986 (kCNS1986) | 1-4837 |
| kCNS1992 (kCNS1992) | 1-4837 |
| kCowles (kCowles) | 316 |
| kDaeJaweon (kDaeJaweon) | 0893.040 |
| Unihan Definition (kDefinition) | cinnabar, vermilion; surname |
| kEACC (kEACC) | 21436F |
| kFenn (kFenn) | 499E |
| kFennIndex (kFennIndex) | 93.04 |
| kFourCornerCode (kFourCornerCode) | 2590.0 |
| kFrequency (kFrequency) | 4 |
| kGB0 (kGB0) | 5476 |
| kGB1 (kGB1) | 5476 |
| kGSR (kGSR) | 0128a |
| kHangul (kHangul) | 주 |
| kHanYu (kHanYu) | 21154.030 |
| kHanyuPinyin (kHanyuPinyin) | 21154.030:zhū,shū |
| kHKGlyph (kHKGlyph) | 1846 |
| kJapaneseKun (kJapaneseKun) | AKA AKE |
| kJapaneseOn (kJapaneseOn) | SHU |
| kJis0 (kJis0) | 2875 |
| kKangXi (kKangXi) | 0509.130 |
| kKorean (kKorean) | CWU |
| kKPS0 (kKPS0) | E9E8 |
| kKSC0 (kKSC0) | 8125 |
| kLau (kLau) | 1565 |
| kMainlandTelegraph (kMainlandTelegraph) | 2612 |
| kMandarin (kMandarin) | zhū |
| kMatthews (kMatthews) | 1346 |
| kMeyerWempe (kMeyerWempe) | 346 |
| kMorohashi (kMorohashi) | 14424 |
| kNelson (kNelson) | 0184 |
| kPhonetic (kPhonetic) | 260 |
| Radical Stroke Count (Adobe Japan 1-6) (kRSAdobe_Japan1_6) | C+2327+75.4.2 |
| Radical Stroke Count (KangXi) (kRSKangXi) | 75.2 |
| Radical Stroke Count (Unicode) (kRSUnicode) | 75.2 |
| kSBGY (kSBGY) | 077.17 |
| kTaiwanTelegraph (kTaiwanTelegraph) | 2612 |
| kTang (kTang) | *jio zhio |
| Stroke Number (kTotalStrokes) | 6 |
| kVietnamese (kVietnamese) | cho |
| kXerox (kXerox) | 251:171 |
| kXHC1983 (kXHC1983) | 1506.210:zhū |
| 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) |
|
| 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) |
|
| 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) | ✘ |