"We have successfully processed 9 ivory fragments in different decay states and 1 complete ivory, achieving a 'zero breakthrough' in the complete protection of the entire waterlogged decay ivory unearthed in archaeology." On January 24th, Chen Jiachang, Vice President of Henan Provincial Institute of Cultural Relics and Archaeology, introduced the latest progress in the protection of waterlogged decay ivory unearthed at the Sanxingdui site in an interview with reporters, He stated that the relevant protection plan also provides new ideas for the protection and restoration of oracle bones and other waterlogged decayed bone and keratin cultural relics. The 2023 Henan Province Cultural Relics Science and Technology Protection Seminar was held in Zhengzhou. On the day of Han Zhangyun's photo, the 2023 Henan Provincial Cultural Relics Science and Technology Protection Seminar was held in Zhengzhou. The conference was hosted by the Henan Provincial Cultural Relics and Archaeology Society and the Henan Provincial Institute of Cultural Relics and Archaeology. The representative team of Zhang Liangshuai from the Henan Provincial Institute of Cultural Relics and Archaeology and the Henan Provincial Center for Cultural Relics Science and Technology Protection introduced the relevant achievements of the research on dehydration and reinforcement of waterlogged and decayed ivory unearthed from the Sanxingdui site. As a precious cultural relic, the protection of ancient ivory has always been of great concern. As a biological composite material, ivory has a unique component structure, and there are many difficulties in effectively protecting ancient ivory. In recent years, researchers from Henan Province have collaborated with the cultural relics department of Sichuan Province to achieve significant results in the dehydration, reinforcement and protection of waterlogged and decayed ivory unearthed from the Sanxingdui site. From 2020 to 2021, more than 400 ivory pieces (fragments) were unearthed from the sacrificial area K3 to K8 at the Sanxingdui site. Due to long-term underground burial, especially under the erosion of various unfavorable factors such as groundwater, soluble salts, and microorganisms, the organic components that play the main bonding role in ivory decompose, and the ivory has a high water content and extremely poor mechanical properties. In the field of archaeology, this type of ivory is known as "unearthed waterlogged and decaying ivory.". The research team in Henan province is protecting the waterlogged and decayed ivory unearthed from archaeology. "After the excavation of these ivory, if there is no protective intervention, the surface will quickly crack, peel off, and eventually disintegrate into powder with the evaporation of water, causing the value of cultural relics to no longer exist," Zhang Liangshuai explained, commissioned by the Sichuan Provincial Institute of Cultural Relics and Archaeology, The Henan Provincial Institute of Cultural Relics and Archaeology has conducted research and related application experiments on the dehydration and reinforcement protection of waterlogged decayed ivory and remnants unearthed from the Sanxingdui site. By conducting CT scans on waterlogged decayed ivory and analyzing the burial environment, researchers have clarified the causes of ivory diseases: loss of organic matter collagen fibers in ivory, making the connection between hydroxyapatite minerals fragile; The presence of water is the key to maintaining the existing form of ivory, and the drying shrinkage stress caused by dehydration is the main reason for ivory disintegration. The picture shows the remains of waterlogged and decayed ivory unearthed from the Sanxingdui site. "It is very important to find a dehydration reinforcement material with high permeability, good compatibility, strong reinforcement effect, and strong environmental adaptability," said Zhang Liangshuai from the Henan Provincial Institute of Cultural Relics and Archaeology. After scientific research and development, the Henan research team finally developed a protective material and related protection process suitable for waterlogged and decayed ivory relics. "The average Vickers hardness of the ivory sample increased by 47.36%.". According to Chen Jiachang, there is relatively little research on the protection of ivory and ivory vessels both domestically and internationally. Based on existing reports