Code point
U+3329
Glyph appearance depends on your fonts.
U+3329
So<square> 30CE 30C3 30C8U+3329 SQUARE NOTTO is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+3329
13097
㌩
㌩
E3 8C A9
3329
00003329
%E3%8C%A9
\u3329
\u3329
\u3329
\3329