Literature Reference: 析毫中睫,洞腋分龟。—— 《舞曲歌辞 吴俞儿舞歌 弩俞》 Splitting a hair between lashes, piercing the armpit to divide a turtle. Source from 'Wu Yu'er Dance Song: Crossbow Yu'.
析: Analyze, contemplate. Discern the beauty of the heavens and the earth, dissect the principles of all things.—"Zhuangzi: The World Under Heaven"
毫: Hair's breadth, the slightest. Originally referring to long and sharp hairs, it later metaphorically denotes the tiniest of things or the most minuscule quantities or parts.
Meaning: To analyze with utmost precision, perceiving the finest details.