Core Viewpoint - The article discusses the unique admission package from Ocean University of China, which includes a pendant containing Antarctic seawater, generating significant interest and resale activity on second-hand platforms [2][4]. Group 1: Admission Package Details - The pendant contains genuine Antarctic seawater, and each admitted student will receive this unique item as part of their admission notification [4]. - The seawater was collected by the university's research team during an expedition to Antarctica [4]. Group 2: Resale Market Activity - The admission package has appeared on second-hand platforms, with prices ranging from 1,800 to 5,000 yuan, indicating high demand [4]. - Some sellers are offering the pendant alone, while others sell the entire package, with prices varying significantly based on seller location and item condition [6][8][10][12]. Group 3: Official Response and Market Regulation - The university has stated that it does not sell the Antarctic seawater pendant and warns against potential counterfeit products in the resale market [13]. - Other universities' admission packages are also being sold at high prices on second-hand platforms, with examples including Nanjing University and Peking University [13]. - The second-hand platform's customer service has indicated that while they prohibit the sale of official documents, the items being sold do not violate their policies as they are considered memorabilia [16].