U+F901 "更" CJK Compatibility Ideograph-# Unicode Character

U+F901 "更" CJK Compatibility Ideograph-# is a specialized glyph within the Unicode standard's CJK Compatibility Ideographs block, which exists primarily to preserve round trip compatibility with older East Asian character encoding standards. This particular character corresponds to the CJK Unified Ideograph U+66F4, which represents the Chinese character "更" meaning "more" or "to change" and is pronounced "gēng" or "gèng" in Mandarin Chinese. Unlike its unified counterpart, U+F901 is a duplicate code point included solely for mapping from legacy character sets, so it is not intended for regular use in modern text processing. Its use is generally discouraged in favor of the standard unified character U+66F4, as compatibility ideographs like this one can cause confusion in text rendering and search consistency across different systems.

General Properties

Code Point	U+F901
Version Added	1.1
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	"更" U+66F4 CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding	更
HTML Hex Encoding	更
UTF-8 Encoding	0xEF 0xA4 0x81
UTF-16 Encoding	0xF901
UTF-32 Encoding	0x0000F901
C/C++/Java Escape	\uf901

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	"更" U+66F4 CJK Unified Ideograph-#
NFKC Simple Casefold	"更" U+66F4 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+66F4
kDefinition	more, still further, much more
kHangul	갱:0
kIRG_KSource	K0-4B56
kKangXi	0000.901
kKorean	KAYNG
kRSUnicode	73.3
kTotalStrokes	7