Literature Reference: 至圆者方，至方者圆。—— 《庄子·外物》 The most perfect circle is square, and the most perfect square is circular. Source from 'Zhuangzi·Outer Things'.
至: Arrive; reach the pinnacle, the utmost, attaining the zenith.
圆: Roundness symbolizes completeness and perfection, embodying a life filled with happiness and fulfillment, and the realization of one's personal aspirations.
Meaning: Perfect without flaw, harmonious and unobstructed.