Literature Reference: When the time comes, I think of 'Jiji', and when I gather to study, I think of 'Daxu'. Source from 'He Meng You Chun Shi Yi Bai Yun'.
既: Since, having eaten. The original meaning is to have finished eating, extended to signify completion, already.
济: Salvation, aiding the world. This is a noble character, conducive to family harmony, happiness, and prosperous development.
Meaning: 'Jiji' signifies the completion of affairs, symbolizing success and fulfillment.