In the first year of Yongxing in the Western Jin Dynasty (AD 304), Li Xiong, leader of the Di ethnic group, established the "Chenghan" regime in Bashu. In the turmoil of the current situation, Shen Yan, a young geographical chronicle compiler, was ordered to determine the territory and compile the geographical chronicles for the new regime. Relying on the secrets that his family has guarded for generations and his profound understanding of ancient books such as "Huayang Kingdom", while surveying the mountains and rivers, he gradually came into contact with the core of the ancient Shu civilization buried deep under the Chengdu Plain - a set of bronze relics related to the sacrifice of heaven and earth and the change of kingship. At the same time, all forces including the Chenghan royal family, refugee commanders, local wealthy families, and even reclusive shamans were eyeing the ruins. Shen Yan was forced to deal with it, and in the whirlpool of recording current geography and deciphering the ancient truth, he became the key connecting the two eras. The story finally explores: When mountains and rivers "speak" again after being silent for thousands of years, how can individuals protect the truth of history and the continuation of culture amidst the fault lines of civilization and the torrent of political power?