Time setting: The story spans two eras-the modern world of 2023 and the future world of 3500 years. In the future world, science and technology are highly developed but cultural gaps are severe, and past history has become a precious resource.
Location setting: The story mainly takes place in the future Earth in 3500 years. Drastic changes in the environment have led to a completely different geographical pattern, but some ancient ruins have been preserved.
Basic background: Although the future society is technologically advanced, a large number of historical records have been lost due to catastrophes. Ancient cultural relics have become the key to unlocking the codes of human civilization, giving birth to the special industry of "future tomb robbing".
