These labels are often used in Chinese & similar relationship models. It comes from the dual consequence of tightknit multi-generation families & a dense symbol-derived language. In Chinese, you can derive the term for a given relative within 2 characters using this relationship model.
The first 2 letters of the string make it obvious:
"CNLabelContactRelationYoungerCousinMothersSiblingsDaughterOrFathersSistersDaughter"
"CN"
These labels are often used in Chinese & similar relationship models. It comes from the dual consequence of tightknit multi-generation families & a dense symbol-derived language. In Chinese, you can derive the term for a given relative within 2 characters using this relationship model.