For thousands of years, humans have considered themselves masters of the Earth, and even of the entire galaxy, exploring the natural world and unraveling the mysteries of the world step by step...... In their understanding, human beings are the only intelligent beings on the earth, and they are the group at the top of the biological chain of all the earth and even the galaxy. But no one could have imagined that tens of thousands of years ago on the earth lived a creature similar to human beings, but with superior intelligence - the Whisperer. These creatures have already established a civilization on Earth tens of thousands of years ago, and they have knowledge that no human can know today. They know how to use light to "hide" themselves anywhere, and they can use their ability to speak guò to restrain themselves and each other, and even move through space at will...... Although most speakers have been away from the earth for 10,000 years, there are still a few speakers who live on earth.