"Deep love will not last long, and wisdom will hurt" comes from "Sword Book Love, Hate, Love and Hatred", which embodies the philosophical concept that extremes meet, meaning that too much investment and persistence can't last long, and too much cleverness can easily see through the world and hurt the body.

Jin Yong in "The Book of Sword" gave Chen Jialuo the lettering on the jade, which revealed the realm that he especially admired all his life. It is these four sixteen characters, "Love doesn't last long, strength leads to humiliation, modesty leads to gentleness, and it is as gentle as jade". These words contain the truth of life. After reading them, Chen really felt a sense of satisfaction and could not restrain his feelings.