Presumably the lookup is based on Unicode character names. The name of "你" is CJK UNIFIED IDEOGRAPH-4F60. Charmap must be showing you information from some sor

Presumably the lookup is based on Unicode character names. The name of "你" is CJK UNIFIED IDEOGRAPH-4F60. Charmap must be showing you information from some sort of dictionary entry or similar, but that's not part of the identity or name of the Unicode character, any more than the name of the Unicode character U+0049 "I" is "first person singular pronoun" (it's actually named LATIN CAPITAL LETTER I); that's just what it happens to mean in one particular language.