1. Kun: It is also a symbol of virtue and talent. "Introduction Book" quotes The Analects of Confucius Yi: "You are the treasure of Lu. Confucius said: Beauty is viewed from a distance, rejuvenated, viewed from a close distance, and observed quietly. " 2. Three colors: Zhu, Bai and Cang. "Li Zhou Guan Chun Dian Rui": "You are all three choices." Zheng Xuan's note: "Three choices, Zhu, Bai and Cang." 3. Six Jun: Zhang Gong makes full use of six Jun and Yu Qiang Bow. "Zuo Zhuan" said that "Gao Yan has three bows and six handsome men". Du pre-note: Shandong people. Thirty catties is jun, and six catties is 180 catties.
If explained, it seems that three different colors can be seen from far to near in the most beautiful Baoyu (Ai Ai). The voice of the phoenix returning from nirvana seems to contain the power of six emperors, and the couplets are antithetical sentences, so the meanings of the upper and lower couplets are similar. Generally speaking, treasures are different from ordinary products, which is probably why the author intends to express his unique interest.