U4E00

U+4E00 is the Unicode code point for the Han character 一, commonly rendered as the Chinese character for “one.” It is the first code point of the CJK Unified Ideographs block, whose characters are used in Chinese, Japanese, and Korean writing. The Unicode name for this character is CJK UNIFIED IDEOGRAPH-4E00.

The character 一 represents the numeral one and is used across East Asian languages as a counting symbol and a component in many other characters. In writing systems, it appears both as a standalone numeral and as a basic radical in more complex ideographs. In Kangxi radical classification, it corresponds to radical 1, reflecting its status as the simplest form in the script set.

In terms of encoding, U+4E00 has the decimal value 19968. In UTF-8 it is encoded as 0xE4 0xB8 0x80; in UTF-16 it is 0x4E00; and in UTF-32 it is 0x00004E00. The character is supported by virtually all modern fonts and rendering systems that include CJK glyphs, making it widely available in digital text.

U+4E00 exemplifies how Unicode represents East Asian ideographs: a single code point corresponds to a single character that participates in a large, interconnected writing tradition. Its simplicity also makes it a common reference point in discussions of encoding, typography, and character design within the CJK family.