Reporters learned from the National Astronomical Observatory of the Chinese Academy of Sciences on the 13th that the scientific research team led by researcher Li Chunlai of the station successfully constructed a high-precision terrain data set for the Chang'e 6 landing area using the high-resolution image data taken by Chang'e 6, which not only accurately located the landing site of Chang'e 6, but also observed the subtle features of the moon surface, such as the roughness of soil particles, the specific shape of the crater, the thickness of lunar soil, and the abundance of rocks. The relevant research results were published in the journal Nature Communications. In addition to the lunar samples brought back by Chang'e-6, its high-definition images of the landing area can help scientists understand the geological details and soil sources of the landing site. These pieces of information are like the "ID card" of lunar soil samples, which are crucial for laboratory research on subsequent lunar samples. In this study, researchers utilized data such as Chang'e-6 landing camera sequence images and panoramic camera close-up stereo images to construct a high-precision landing area terrain dataset. Research has found that the landing site of Chang'e-6 is located on the southwest edge of a crater (C1 crater) with a diameter of about 51 meters, which belongs to the lunar mare basalt region. Through comparison, researchers found that the geological characteristics of the surface roughness, depth ratio of meteorite craters, lunar soil thickness, and number of rocks in this area are all between the landing areas of Chang'e-4 and Chang'e-5, indicating that the surface exposure time experienced by this area is roughly between these two. Research has found that the landing area of Chang'e-6 is covered with meteorite impact and splash marks, and multiple splash radiation patterns can be seen on remote sensing images. After calculation, the soil here is actually a "mixed formula", with about 35 centimeters of local basalt (accounting for 30% -35%) coming from the C1 crater near the landing area, and 5-16 centimeters of foreign material, possibly originating from a more distant meteorite crater. This study provides key scientific evidence for the material sources of lunar samples from Chang'e-6, laying the foundation for future laboratory research and precise analysis of lunar samples. (New Society)