U+1F233 "🈳" Squared CJK Unified Ideograph-7A7A Unicode Character
Unicode Version 17.0
🈳
U+1F233 "🈳" Squared CJK Unified Ideograph-7A7A is a square-shaped symbol from the Enclosed Ideographic Supplement block, representing the Chinese character 空 (kōng), which means "empty," "sky," "air," or "void." It is commonly used in Japanese and Chinese digital contexts as an emoji or typographic icon, often appearing on user interface buttons or labels to indicate an empty state, vacancy, or the concept of nothingness. Its squared enclosure distinguishes it as a stylized, compact ideograph suitable for use in menus, signs, or decorative text.
General Properties
| Code Point | U+1F233 |
| Version Added | 6.0 |
| Name | Squared CJK Unified Ideograph-7A7A |
| Block | Enclosed Ideographic Supplement |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Square |
| Decomposition Mapping | "空" U+7A7A CJK Unified Ideograph-# |
Encodings
| HTML Decimal Encoding | 🈳 |
| HTML Hex Encoding | 🈳 |
| UTF-8 Encoding | 0xF0 0x9F 0x88 0xB3 |
| UTF-16 Encoding | 0xD83C 0xDE33 |
| UTF-32 Encoding | 0x0001F233 |
| C/C++/Java Escape | \ud83c\ude33 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "空" U+7A7A CJK Unified Ideograph-# |
| NFKC Simple Casefold | "空" U+7A7A CJK Unified Ideograph-# |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |
| Emoji | Yes |
| Emoji Presentation | Yes |
| Extended Pictographic | Yes |