1. "Singing wine and singing, what's the point of life?" is a famous saying. With fine wine and singing and dancing, time in life is limited. The "geometry of life" mentioned here means that life time is limited, and people are not asked to "enjoy themselves in time", but to make achievements in a timely manner. Later it was also used to refer to carpe diem.

2. This sentence comes from "Dan Ge Xing". "Two Duan Ge Xing" are two poems written by Cao Cao, a statesman and writer in the late Eastern Han Dynasty, based on ancient Yuefu inscriptions. The first poem uses the singing of a banquet to express the poet's thirst for talents and his ambition to unify the world in a calm and frustrated style; the second poem praises the historical events of King Wen of Zhou, Duke Huan of Qi, and Duke Wen of Jin for adhering to ministerial integrity. , stating that he only had the ambition to help the Han Dynasty, and had no intention of being independent on behalf of the Han Dynasty.