房屋建设板块12月12日跌0.46%，龙元建设领跌，主力资金净流入3167.12万元

Group 1 - The housing construction sector experienced a decline of 0.46% compared to the previous trading day, with Longyuan Construction leading the drop [1] - On the same day, the Shanghai Composite Index closed at 3889.35, up by 0.41%, while the Shenzhen Component Index closed at 13258.33, up by 0.84% [1] Group 2 - In terms of capital flow, the housing construction sector saw a net inflow of 31.67 million yuan from main funds, while speculative funds experienced a net outflow of 60.83 million yuan, and retail investors contributed a net inflow of 29.16 million yuan [2]