The Twelve Hours of Chang 'an was a novel that reflected the history and reality of Chang' an City in the Tang Dynasty. There were many fragments worth pondering. The following are some examples: The novel described the social unrest and chaos of the Tang Dynasty during the An Lushan Rebellion, reflecting the political, economic, and cultural conditions at that time. This clip reminds us to pay attention to the impact and consequences of historical events and the lessons learned from history. 2. The Shame of Jingkang: The novel depicted the social unrest and political crisis during the Jingkang period of the Song Dynasty, reflecting the social instability and ethnic conflicts at that time. This clip reminds us to pay attention to the enlightenment and influence of historical events on modern society and to cherish a peaceful and stable life. 3. Xiliu Camp Fragment: The novel described the camp structure of the Tang Dynasty army and the lives of the soldiers, reflecting the discipline and material conditions of the Tang Dynasty army. This clip reminds us to pay attention to the role and influence of the military in war and to pay attention to the quality of life and health of soldiers. 4. Chang 'an 12:00: The novel described the patrol at night and the speed of response in emergencies in Chang' an City, reflecting the prosperity and management system of Chang 'an City in the Tang Dynasty. This clip reminds us of the importance of safety management and development in modern society, as well as the importance of technological innovation and digital transformation. There are many fragments in Chang 'an Twelve Hours that reflect reality and are worth pondering. These fragments present the history and reality of Chang' an City in the Tang Dynasty through the form of novels. It is of great significance for us to understand and reflect on history, pay attention to society and human development.