CJK Unified Ideographs Extension H

This block contains rare and obsolete symbols for Chinese, Japanese, Korean, Zhuang, and Vietnamese languages.

In general, the CJK Unified Extensions is a block in Unicode that contains additional characters used in East Asian writing systems, specifically for Chinese, Japanese, and Korean languages. It was created to include characters that were not initially included in the basic CJK Unified Ideographs block.

These extensions greatly expanded the range of characters available in Unicode for East Asian languages and improved support for the representation of complex ideographic characters. They include rare, archaic, and specialized characters that are used in literature, historical texts, personal names, and technical fields.