Code point
U+31EF
Glyph appearance depends on your fonts.
U+31EF
SoU+31EF IDEOGRAPHIC DESCRIPTION CHARACTER SUBTRACTION is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Strokes block.
Choose the representation you need, then copy its value.
U+31EF
12783
㇯
㇯
E3 87 AF
31EF
000031EF
%E3%87%AF
\u31EF
\u31EF
\u31EF
\31EF