This property defines the Unicodes which belongs to CJK Unified Ideographs Extension H block
Characters like 𱍐,𱍑,𱍒, etc. are listed under CJK Unified Ideographs Extension H Block.
4192 Characters are present in CJK Unified Ideographs Extension H Block starting with the Unicode point U+31350 that represents the character 𱍐.
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.