Personally, I think it is meaningful to both the intermediary and the border, and the word "contempt" originally means the border.
Classmate, it depends on where it is used. There is still a big difference between "Jie" and "Xie".
The original meaning of the introduction is boundary, boundary. If we take its original meaning, it can really be linked with "boundary", but it is used more in ancient times and less in modern times.
The original meaning of "intermediary" is a, a and boundary, and it extends to both, such as introduction, media and introduction, reservation and placement. "Jie" is a word formed by Tian He Jie. The field indicates land; Intermediary is both pronunciation and cognition, which means that intermediary means reference and indicates the intersection between fields. So modern use is still very different.