We mark the major historical events and times of relevant geographical locations on the map, and take the map of the territory of different historical periods as the supplementary map to reflect the changes of China's historical territory, the evolution of administrative divisions, the changes of historical place names and other contents. The chronology of Chinese history revolves around the map of China, and corresponds to the outermost major events of world history on the time axis, so as to facilitate readers to understand the contemporary connection between China and the world. This picture is published as the first historical chronology and wall map in China, and is aimed at teenagers.