During the Spring and Autumn period, after Confucius was marginalized in the political arena of the State of Lu, he led his disciples on a journey through various states.

After encountering difficulties in places like Wei, Zheng, Chen, and Jin, they found themselves living in leisure in Cai.

Faced with a challenging life, Confucius discussed his experiences with his disciples, reflecting that he had resolved to spread his teachings since he was thirty, and had since passed through the 'age of no perplexity' (forty) to reach his current age, filled with deep emotions...

Zai Yu immediately came forward to comfort Confucius.