On the 1st, it was learned from the "Archaeology Beijing (2025) - Beijing's Latest Archaeological Research Results Release Conference" and the closing ceremony of the 2025 Beijing Public Archaeology Season that in 2025, Beijing carried out archaeological excavation work on the enemy towers 117, 118, and 119 in the eastern section of the Jiankou Great Wall and the walls of the Great Wall between enemy towers, achieving important results. Weapons, equipment, building components, daily necessities and other cultural relics, as well as a large number of charred remains, have been unearthed from the enemy station. Among them, the cannon cast in the fifth year of the Chongzhen reign of the Ming Dynasty is currently the largest cannon unearthed in the section of the Arrow Hook Great Wall. The inscription on the cannon body provides evidence for studying the production and manufacturing of firearms in the Ming Dynasty. It provides new materials for the exchange of military technology between the East and the West, as well as the technological level and development of Chinese casting guns and cannons. ”Shang Heng, deputy research curator of Beijing Institute of Archaeology, said. The Xingong Site is a double ring moat settlement site discovered during the Xia and Shang dynasties in the urban area of Beijing. Its discovery fills the gap in the historical and cultural landscape of the Xia and Shang dynasties in Beijing's urban area. Its remains mainly include tombs, trenches, house sites, cellars, ash pits and other relics from the Datuotou Culture period. It is reported that the material properties, process characteristics, and potential sources of 28 turquoise products unearthed from the Datuotou Cultural Cemetery have been explored through a series of high-precision technical methods. For example, the identification of complex process traces such as rotary drilling indicates that ancient people had already mastered a high level of bead making technology. The mineral genesis and geographical origin have been effectively revealed, and the Xingong turquoise should originate from the turquoise belt in the southern part of the border area between Hubei, Henan, and Shaanxi. Yang Ju, a researcher at the Beijing Institute of Archaeology, said that this study not only fills the gap in early turquoise research in North China, but also provides key evidence for reconstructing the history of material and cultural exchanges in ancient China. Thousands of years ago, there were already trade and cultural exchanges between the north and south of China, which effectively promoted the formation of a diverse and integrated pattern of Chinese civilization. In recent years, Beijing has been promoting the integration of archaeology and conservation with the work concept of "large-scale archaeology", coordinating archaeological excavation, conservation research, exhibition and utilization. On that day, the archaeological research results obtained from the Liulihe Site and the former site of the Palace Museum Construction Office were also released. A batch of excavated cultural relics that have been sorted and researched in Beijing have been handed over on site, and a batch of highly representative archaeological academic works have been recommended. (New Society)