This property defines the Unicodes which belongs to CJK Unified Ideographs Extension E block
Characters like 𫠠,𫠡,𫠢, etc. are listed under CJK Unified Ideographs Extension E Block.
5763 Characters are present in CJK Unified Ideographs Extension E Block starting with the Unicode point U+2B820 that represents the character 𫠠.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.