Literature Reference: 简，字也。——《说文》 'Jian' means simplicity or brevity. Source from 'Shuowen Jiezi'.
简: In contrast to "complexity," it signifies simplicity and lack of intricacy. Additionally, "简" refers to the bamboo or wooden slips used for writing in ancient times.
Meaning: Simplicity symbolizes purity and a peaceful state of mind.