Literature Reference: 知老何山是，思归愚谷中。—— 《书怀寄友人》 姚合 Knowing which mountain to grow old on, I think of returning to the Valley of Simplicity. From 'Thoughts Sent to a Friend' by Yao He.
愚: Ignorance, folly, utterly senseless.
谷: Surname, the essence of sustenance.
Meaning: The Valley of Simplicity symbolizes a return to simplicity, peace, and wisdom, embodying the pursuit of inner tranquility and transcendence.