With the continuous development of modern science and technology, we are learning more and more about the world we live in. We explore outer space to find out the secrets of the universe. We study our history to understand the stories that have taken place on the planet we live on. We try to learn to live in harmony with our environment, with other animals and plants. And most of all, we try to learn to live in peace with ourselves and with other human beings. Learning is an ongoing process for every individual as well as for all mankind. Based on what we currently know, below is a brief history of China and the Great Wall.