advance
晋 centers on moving forward or progressing: advancing in position, rank, or a journey.
晋 is traditionally explained as combining 亚 (a stylized form suggesting reaching or arriving) with 日 (sun), conveying the idea of advancing like the rising sun. The exact historical development of the 亚 component is uncertain.
The top 亚 looks like a person striding forward, and the bottom 日 is the sun. Picture someone advancing toward the sunrise, making progress with each step.
For シン, imagine advancing with a confident shin (the front of your leg) forward: shin -> シン, and each step pushes you ahead.
Jin dynasty (of China; 265-420 CE); Chin dynasty
Later Jin dynasty (of China; 936-947); Later Chin dynasty
taking up a new position as chief priest of a Buddhist temple
History of the Jin Dynasty
Jin Chinese (language)
Eastern Jin dynasty (of China; 317-420 CE); Eastern Chin dynasty
jin (hexagram 35 of the I Ching: progress)
Western Jin dynasty (of China; 265-317 CE); Western Chin dynasty
Wei, Jin, and Southern and Northern Dynasties period (China, 220-589 CE)