My personal understanding of this sentence is that all the doctrines I have seen are nihilistic. It is best to know what you are pursuing in your life.

This sentence comes from the lyrics of a song "Seeing the Deer", written by Tang Yingfeng and Yi Yiran.

Tang Yingfeng, born in Deyang, Sichuan in 1991, is a young lyricist from Mainland China and the founder of Kuyusi Music Studio. In 2014, he and Liu Haolin founded Kuyusi Music Studio in Beijing.

Representative works include "Ideal Thirty" by Chen Hongyu, "Childhood" by Liu Haolin and "You Said" by Yi Yang Qianxi, etc.

After Liu Haolin, a student of The Voice of China, saw Tang Yingfeng’s lyrics online, he admired his talent and invited him to Beijing to make music together. In 2014, the two founded Kuyusi Music Studio in Beijing.