铁路公路板块12月16日跌0.25%，海南高速领跌，主力资金净流入2.25亿元

Core Points - The railway and highway sector experienced a decline of 0.25% on December 16, with Hainan Highway leading the drop [1] - The Shanghai Composite Index closed at 3824.81, down 1.11%, while the Shenzhen Component Index closed at 12914.67, down 1.51% [1] Funding Flow - On the same day, the railway and highway sector saw a net inflow of 225 million yuan from main funds, while retail funds experienced a net outflow of 41.52 million yuan [2] - Speculative funds had a net outflow of 183 million yuan [2]