人类个体的寿命是有限的,所以需要将祖辈的故事记录成历史档案代代相传,这些故事不应该仅仅包括政治、经济、军事、科技和文化,还应该包括自然环境状况。但是,人类对于过去的事情所知非常有限,尤其是有文字记录以前的自然环境更是知之甚少。为了探索有文字记载以前的自然环境, The life span of human individuals is limited, so we need to record the stories of our ancestors as historical archives passed down from generation to generation. These stories should not only include politics, economy, military, science and technology, and culture, but should also include the state of the natural environment. However, human beings have very limited knowledge of the past, especially when there is a written record of the natural environment before. In order to explore the previous natural environment written,