First, the source of the sentence

This sentence comes from the famous sentence "Easy Travel" by Zhuangzi, a thinker in the pre-Qin period. Its original sentence is "there are fish in the north, named Kun".

Second, about Zhuangzi.

Zhuangzi, surnamed Zhuang Mingzhou and named Zi Xiu (also known as Zi Mu), was born in the Song Dynasty, and his ancestors were the monarch and duke of the Song Dynasty. He was a famous thinker, philosopher and writer in the middle of the Eastern Zhou Dynasty and the Warring States Period. Zhuangzi, an important school of philosophy in China, was founded. He is a representative of the Taoist school in the Warring States period after Laozi and one of the main representatives of the Taoist school.

Third, about Zhuangzi.

Zhuangzi, also known as Nanhuajing, is one of the Taoist classics and a collection of works on Zhuang Zhou and his later studies. Zhuangzi was a thinker and philosopher in the Warring States Period. , Song (now Mengcheng County, Anhui Province, now northeast of Shangqiu, Henan Province). At the same time as the beam, there are also and. There are 52 Zhuangzi articles recorded in the Records of Han Shu Literature and Art, and only 33 exist. Among them, there are seven chapters, which are generally designated as Zhuangzi; Foreign essays may be mixed with his disciples and later Taoist works. Zhuangzi is of great philosophical and literary research value. Famous articles include Happy Travel, Theory of Everything, Master of Health, etc. Among them, My Clever Understanding of Cattle is especially popular in later generations.

Fourth, about "free travel"

Happy Travel is Zhuangzi's first article, which can be regarded as Zhuangzi's masterpiece both ideologically and artistically. The theme of "Happy Travel" is to pursue the outlook on life of absolute freedom. The author believes that only by forgetting the boundary between things and me, reaching the realm of no self, no work and no name, and swimming in infinity without any foundation, can we truly "travel happily". At last, through the argument between Keiko and Zhuangzi about "usefulness" and "uselessness", the article shows that only people who are not used by the world are "carefree". The full text is rich in imagination, novel in conception, magnificent and grotesque, with Wang Yang's wanton and romantic spirit between the lines.