Literature Reference: 介，疆也。——《说文》 Jie means boundary. Source from 'Shuowen Jiezi'.
介: The term embodies meanings such as boundaries, demarcations, and intervals, and later extends to signify reliance, dependence, assistance, integrity, and greatness.
Meaning: Jie signifies boundaries, integrity, and strength, embodying an unyielding character.