Literature Reference: 草席蒲团不扫尘，松闲石上似无人。 —— 《永安寺照上人房》 A grass mat and a rush cushion lie un-swept, as if no one is on the leisure stone under the pine tree. Source from 'Yong'an Temple's Monk Room'.
蒲: In ancient usage, it is the same as "匍" (pú), which means to prostrate or crawl.
团: Unity, rallying around.
Meaning: The rush cushion symbolizes tranquility and focus in meditation, representing inner peace and spiritual practice.