This property defines the Unicodes which belongs to Kayah Li block
Characters like ꤀,꤁,꤂, etc. are listed under Kayah Li Block.
48 Characters are present in Kayah Li Block starting with the Unicode point U+A900 that represents the character ꤀.
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.