U+FAC7 "難" CJK Compatibility Ideograph-# Unicode Character

Unicode Version 17.0

U+FAC7 "難" CJK Compatibility Ideograph-# is a rarely used glyph from the CJK Compatibility Ideographs block, which was originally encoded to maintain round-trip compatibility with older East Asian character sets and legacy standards like CNS 11643 and JIS X 0213. Its primary function is not to represent a common Chinese, Japanese, or Korean character in modern text, but rather to map a specific, often obscure or variant ideograph from those legacy systems into the Unicode standard, ensuring that documents encoded in those older formats can be accurately converted without loss of information. As a compatibility character, it is not typically used in contemporary writing and may not be displayed correctly without a font that includes specific support for that region of the Unicode Private Use Area, where it was placed during early encoding efforts before later reassignment to the Compatibility block.

General Properties

Code Point U+FAC7
Version Added 4.1
Name CJK Compatibility Ideograph-#
Block CJK Compatibility Ideographs
General Category Other Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Canonical
Decomposition Mapping "難" U+96E3 CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding 難
HTML Hex Encoding 難
UTF-8 Encoding 0xEF 0xAB 0x87
UTF-16 Encoding 0xFAC7
UTF-32 Encoding 0x0000FAC7
C/C++/Java Escape \ufac7

Unicode Properties

Full Composition Exclusion Yes
Numeric Type None
Numeric Value NaN
Line Break Ideographic
East Asian Width Wide
Changes When NFKC Casefolded Yes
NFKC Casefold "難" U+96E3 CJK Unified Ideograph-#
NFKC Simple Casefold "難" U+96E3 CJK Unified Ideograph-#
Script Han
Script Extensions Han
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Vertical Orientation Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Other
Sentence Break OLetter
Ideographic Yes

Unihan Properties

kCompatibilityVariant U+96E3
kIRG_KPSource KP1-8404
kRSUnicode 172.11
kTotalStrokes 18