It is an attributive postposition sentence. From Zhuang Zhou's "Happy Travel": "In the Song Dynasty, there was a good medicine that didn't touch the turtle's hand, and the world took it as a matter." There was a man in the Song Dynasty who was good at making drugs to prevent hand crack. In his family's time, he made a living by rinsing clothes. Happy Travel is the first article in Zhuangzi, which represents Zhuangzi's philosophical thought.

Zhuangzi, surnamed Zhuang and Zhou, was born in the Song Dynasty during the Warring States Period. In the mid-Warring States period, the representative of Taoist school, thinker, philosopher and writer, the founder of Zhuangzi, also known as "Lao Zi and Zhuang Zi". The earliest thought of "sage inside and king outside" had a far-reaching influence on Confucianism. He deeply understood Zhouyi and pointed out that "the Book of Changes takes the way of Yin and Yang", and his thought of "three tones" is consistent with the way of three talents in Zhouyi. His imagination is extremely rich, his language is freely used and flexible, and he can make subtle and unspeakable philosophy fascinating. The representative work is Zhuangzi, among which the famous articles are Free Travel, On Wuqi, Master of Health Care, etc. His works are called "the philosophy of literature, the literature of philosophy". It is said that Zhuangzi tried to live in seclusion in Nanhua Mountain and was buried in Nanhua Mountain. Therefore, at the beginning of Tianbao, Emperor Xuanzong of the Tang Dynasty was named a South China True Man, and his book Zhuangzi was regarded as the South China True Classic.