The Tangut Supplement block spans U+18D00–U+18D7F, 128 codepoints in Plane 1 (Supplementary Multilingual Plane). 9 are assigned in Unicode 16.0; the other 119 are reserved for future characters.
All of its characters belong to the Tangut script.
By general category: 9 other letters (Lo).
The first 9 arrived in Unicode 13.0 (2020).
9 characters are East Asian Wide or Fullwidth and take two columns in terminals.
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.