This property defines the Unicodes which belongs to Mahjong block
Characters like 🀀,🀁,🀂, etc. are listed under Mahjong Block.
45 Characters are present in Mahjong Block starting with the Unicode point U+1F000 that represents the character 🀀.
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.