Code point
U+3308
Glyph appearance depends on your fonts.
U+3308
So<square> 30A8 30FC 30AB 30FCU+3308 SQUARE EEKAA 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+3308
13064
㌈
㌈
E3 8C 88
3308
00003308
%E3%8C%88
\u3308
\u3308
\u3308
\3308