Fang Yuhang woke up from his deep sleep and faced the sky full of ice and snow and the great changes in the world. What happened to the earth? At the end of the Cretaceous period 65 million years ago, the fifth mass extinction occurred, with 98% of species disappearing and the dinosaurs becoming extinct. Primitive humans prevailed in the survival of the fittest and finally entered the stage of history. According to estimates, the interval between each mass extinction cycle is approximately 62 million years. Tens of millions of years have passed, and the sixth mass extinction has quietly begun in the 21st century... Will humans disappear like the dinosaurs? What creature will take the place that humans once held?
