Core Insights - The article highlights the significance of the Lingjiatan archaeological site, showcasing its historical artifacts and cultural importance, which date back over 5,000 years, including jade artifacts that are believed to be tools for astronomical observation predating oracle bone inscriptions by more than 2,000 years [1][2] Group 1: Archaeological Significance - Lingjiatan site is recognized as the largest and best-preserved Neolithic settlement in the Yangtze River basin, with 16 archaeological excavations conducted since 1987, covering an area of 8,500 square meters and yielding nearly 4,000 artifacts, including over 1,000 jade items [1][2] - The site is considered one of the three major jade cultures in ancient China, alongside Hongshan and Liangzhu cultures, reflecting advanced jade craftsmanship and a mature theocratic system [1][2] Group 2: Economic and Social Impact - The establishment of the Lingjiatan National Archaeological Park, covering an area of 3.35 square kilometers, has attracted approximately 1.5 billion yuan in investments, including 150 million yuan from social funds, leading to the development of facilities such as museums and visitor centers [2][3] - The park has received over 1.5 million visitors since its opening, generating around 200 million yuan in tourism revenue, significantly benefiting local businesses and creating job opportunities for residents [3]