The Wei-Jin period is an important stage in Chinese history, as well as a time of significant changes in social atmosphere. During this period, traditional etiquette and laws were broken, and mockery and jest became prevalent. The reasons behind this deserve further exploration.

Firstly, the social unrest in the Wei-Jin period was a major factor leading to the breakdown of etiquette and laws. During this time, the Central Plains experienced years of warfare, resulting in social disorder and uncertainty in people's lives. Under such circumstances, traditional etiquette and laws were unable to meet people's needs, and they began to seek new ways of life and expression.

Secondly, changes in the intellectual class during the Wei-Jin period also contributed to the breakdown of etiquette and laws. During this time, the status of the intellectual class rose, and they began to pursue personal liberation and spiritual freedom. This pursuit conflicted with traditional etiquette and laws, leading to their breakdown.

Thirdly, changes in philosophical thought during the Wei-Jin period also had an impact on the breakdown of etiquette and laws. During this time, Taoist and Metaphysical thoughts became popular, emphasizing personal freedom and liberation of personality, which conflicted with traditional etiquette and laws.

Finally, the prevalence of mockery and jest in the Wei-Jin period was also a form of rebellion against traditional etiquette and laws. People used mockery and jest to express their dissatisfaction and rebellion, which not only allowed them to vent their emotions but also avoided direct conflict.

Overall, the social unrest, changes in the intellectual class, changes in philosophical thought, and the prevalence of mockery and jest in the Wei-Jin period were all important reasons for the breakdown of etiquette and laws. These changes reflect the complexity and diversity of society at that time, and provide important perspectives for us to understand the society of the Wei-Jin period.

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