"Going Back to Ancient Times to Become a National Preceptor" is a historical conspiracy novel with a time-travel theme. It tells the story of a modern protagonist who accidentally travels to ancient times and gradually ascends to the position of National Preceptor with the help of modern knowledge and wisdom. The protagonist uses his understanding of history and prediction of the future to strategize in complex court struggles, resolve crises, assist the king, and promote the prosperity of the country. However, as his power grows, he also faces overt and covert struggles from various forces, and even has to face his own inner struggles and choices. This book combines elements of history, intrigue, and wits, and contains both exciting court games and profound thoughts on human nature and destiny.