The discovery of ape-man fossils in Yiyuan is a great achievement of archaeologists in China. This is the first time in Shandong Province. According to the age of ancient human evolution, it ranks fifth in China; According to its distribution, it is District 9. It not only fills a gap in the geographical distribution of Chinese apes, but also provides valuable physical data for the study of paleogeography, climate, human evolution and prehistoric culture.

The discovery of fossils strongly proves that hundreds of thousands of years ago, human ancestors lived, lived and multiplied in this ancient land of Qian Shan, which is full of valleys and rivers. They created the ancient civilization of Shandong. Yiyuan County is the cradle of human development and evolution. Since May 1982 1 day, china national radio, People's Daily, Wen Wei Po, Jiefang Daily, Beijing Daily, Volkswagen Daily and many other media have successively broadcast this news, which quickly spread all over the country and around the world.

Also:1981September 18, cultural relics surveyors in Yiyuan County rode horses on the Anshan root 1000 meters northeast of Jiuhui Village in Tumen Town, and found an ape-man skull fossil. Later, an excavation team composed of Lu Zuen, an archaeological professor from Peking University, Shandong University, provincial museum and county library, found 1 ape-man skull, 2 eyebrow bones, 8 teeth, 1 humerus, femur and ribs, and 10/0 kinds of companion animal bones. Appraised by the Institute of Paleoanthropology of China Academy of Sciences, Peking University and other related professors and experts, it is indeed the remains of Paleolithic apes, belonging to ancient human fossils unearthed by more than two apes. It was named "Yiyuan Ape Man" by the relevant state units. The skull fossils of Yiyuan ape-man are kept in Shandong Provincial Museum.