今天，全线下跌！原因，找到了！

Core Viewpoint - The overall market performance on December 16 was poor, with significant declines in A-shares and across the Asia-Pacific region, prompting analysts to seek reasons for the downturn [2][12]. Market Performance - On December 16, the Shanghai Composite Index fell by 1.11%, the Shenzhen Component Index dropped by 1.51%, and the ChiNext Index decreased by 2.1% [2]. - A total of 1,091 stocks rose, while 4,302 stocks declined, with 46 stocks hitting the daily limit up [3][4]. Sector Performance - Retail and consumer stocks showed resilience, with companies like Yonghui Supermarket and Anji Food hitting the daily limit up [4]. - The autonomous driving sector was active, with companies such as Zhejiang Shibao and BAIC Blue Valley seeing significant gains following the announcement of L3-level autonomous driving vehicle approvals [5][6]. Notable Stocks - Several stocks in the autonomous driving sector, including Hanxin Technology and Wanji Technology, experienced substantial increases, with Hanxin Technology rising by 29.99% [7]. - Commercial aerospace stocks were also active, with Hualing Cable achieving a four-day limit up streak [8]. Declining Sectors - The film and television industry and photovoltaic equipment sectors faced significant declines, with companies like Bona Film Group and China Film dropping by nearly 10% [10][11]. - The overall sentiment in the market reflected a cautious approach as the year-end approached, with concerns about economic growth and potential interest rate hikes influencing investor behavior [13].