U+FACE "龜" CJK Compatibility Ideograph-# Unicode Character

U+FACE "龜" CJK Compatibility Ideograph-# is a rarely encountered symbol within the Unicode standard, specifically categorized under the CJK Compatibility Ideographs block. This block contains characters that were originally included for compatibility with older East Asian character encoding standards, meaning U+FACE represents a Chinese/Japanese/Korean ideograph that had a distinct shape or usage in legacy systems but is now considered a duplicate of a standard CJK Unified Ideograph. In practice, U+FACE is seldom used in modern text, as its function is largely superseded by its unified counterpart in the main CJK block, and its primary purpose is to preserve round-trip compatibility with older data.

General Properties

Code Point	U+FACE
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	"龜" U+9F9C CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding	龜
HTML Hex Encoding	龜
UTF-8 Encoding	0xEF 0xAB 0x8E
UTF-16 Encoding	0xFACE
UTF-32 Encoding	0x0000FACE
C/C++/Java Escape	\uface

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	"龜" U+9F9C CJK Unified Ideograph-#
NFKC Simple Casefold	"龜" U+9F9C 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+9F9C
kIRG_KPSource	KP1-927F
kRSUnicode	213.0
kTotalStrokes	15