The history of this time and space experienced a serious fault around the late Tang and early Song Dynasties, resulting in the loss of a large number of early historical records, cultural inheritance, and scientific and technological knowledge. The social form is similar to the Republic of China as we know it (warlords fighting, great powers surrounding each other, and ideological collisions), but it has a vague understanding of the roots of its own civilization and is full of fallacies and legends. Archeology and history have a very high status, but research is difficult.
