During the Jiajing period of the Ming Dynasty, Shen Yan, a scholar from a poor family in the south of the Yangtze River, could only make ends meet by copying books due to his family's financial difficulties. In an accident, he obtained a "Tiangong Tushu" that could concretely deduce the knowledge in the book. It could not only simulate imperial examination questions, but also analyze the principles of all things. With this golden finger, Shen Yan passed all the tests from the county examination and entered the court. Faced with the strife of powerful officials, fraud in the examination room, and the suffering of the people's livelihood, he relied on his extraordinary resourcefulness and "Tiangong Map" to survive step by step in the turbulent officialdom, and eventually became a famous official, using the knowledge he learned to benefit the people.