U+56DB "四" CJK Unified Ideograph-# Unicode Character
Unicode Version 17.0
四
U+56DB "四" CJK Unified Ideograph-# is a fundamental logogram representing the number four in Chinese, Japanese, and Korean (CJK) writing systems. It is composed of a square enclosure with two interior strokes, symbolizing a fourfold division or a cross within a boundary. Historically derived from ancient oracle bone script, where it originally depicted four lines, its meaning extends to concepts of all four directions, completeness, and even death in some contexts due to its homophony with the word for death in Chinese. This character is widely used in calendar dates, mathematics, and cultural expressions across East Asia.
General Properties
| Code Point | U+56DB |
| Version Added | 1.1 |
| Name | CJK Unified Ideograph-# |
| Block | CJK Unified Ideographs |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | 四 |
| HTML Hex Encoding | 四 |
| UTF-8 Encoding | 0xE5 0x9B 0x9B |
| UTF-16 Encoding | 0x56DB |
| UTF-32 Encoding | 0x000056DB |
| C/C++/Java Escape | \u56db |
Unicode Properties
Unihan Properties
| kBigFive | A57C |
| kCCCII | 213765 |
| kCNS1986 | 1-463E |
| kCNS1992 | 1-463E |
| kCangjie | WC |
| kCantonese | sei3 |
| kCihaiT | 294.601 |
| kCowles | 3770 |
| kDaeJaweon | 0439.210 |
| kDefinition | four |
| kEACC | 213765 |
| kFanqie | 息利 |
| kFenn | 773A |
| kFennIndex | 481.06 482.01 |
| kFourCornerCode | 6021.0 |
| kGB0 | 4336 |
| kGB1 | 4336 |
| kGradeLevel | 1 |
| kGSR | 0518a |
| kHangul | 사:0E |
| kHanYu | 10710.160 |
| kHanyuPinlu | sì(2101) |
| kHanyuPinyin | 10710.160:sì |
| kHKGlyph | 0718 |
| kIICore | AGTJHKMP |
| kIRGDaeJaweon | 0439.210 |
| kIRGHanyuDaZidian | 10710.160 |
| kIRGKangXi | 0216.220 |
| kIRG_GSource | G0-4B44 |
| kIRG_HSource | HB1-A57C |
| kIRG_JSource | J0-3B4D |
| kIRG_KPSource | KP0-E0D1 |
| kIRG_KSource | K0-5E4C |
| kIRG_TSource | T1-463E |
| kIRG_VSource | V1-503B |
| kJapanese | シ シツ シチ よ よつ よっつ よん |
| kJoyoKanji | 2010 |
| kKoreanEducationHanja | 2007 |
| kTGH | 2013:262 |
| kJapaneseKun | YOTSU YOTABI |
| kJapaneseOn | SHI |
| kJis0 | 2745 |
| kKangXi | 0216.220 |
| kKorean | SA |
| kLau | 2716 |
| kMainlandTelegraph | 0934 |
| kMandarin | sì |
| kMatthews | 5598 |
| kMeyerWempe | 2908 |
| kMojiJoho | MJ008816 MJ008816:E0101 MJ008817:E0102 |
| kMorohashi | 04682 04682:E0101 |
| kNelson | 1025 |
| kPhonetic | 1156 |
| kPrimaryNumeric | 4 |
| kRSAdobe_Japan1_6 | C+2203+10.2.3 C+2203+31.3.2 |
| kRSUnicode | 31.2 |
| kSBGY | 354.26 |
| kSemanticVariant | U+8086<kLau |
| kSMSZD2003Index | 123.11 |
| kSMSZD2003Readings | sì粵sei3 |
| kSpecializedSemanticVariant | U+8086<kFenn |
| kTaiwanTelegraph | 0934 |
| kTang | *sì |
| kTGHZ2013 | 347.020:sì |
| kTotalStrokes | 5 |
| kUnihanCore2020 | GHJKMPT |
| kVietnamese | tứ |
| kXerox | 241:136 |
| kXHC1983 | 1089.020:sì |