Code point
U+257D
Glyph appearance depends on your fonts.
U+257D
SoU+257D BOX DRAWINGS LIGHT UP AND HEAVY DOWN is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Box Drawing block.
Choose the representation you need, then copy its value.
U+257D
9597
╽
╽
E2 95 BD
257D
0000257D
%E2%95%BD
\u257D
\u257D
\u257D
\257D