U+21FFF is one of the 42720 characters in the CJK Extension B Unicode subset.
The image below shows how the U+21FFF symbol looks like in some of the most complete UTF-8 fonts: Code2000, Sun-ExtA, WenQuanYi Zen Hei and GNU Unifont. If the font in which this web site is displayed does not contain the U+21FFF symbol, you can use the image below to get an idea of what it should look like.
Please share your opinion about this UTF-8 symbol. If you have any useful insight information you would like to share (such as historical, emotional, literal meaning, or any other use cases) please leave a comment below and let us know. We would honestly appreciate it.