A股房地产板块快速下挫，绿地控股封板跌停，渝开发、南山控股、财信发展、光大嘉宝跟跌。

Core Viewpoint - The A-share real estate sector has experienced a rapid decline, with Greenland Holdings hitting the daily limit down, followed by declines in other companies such as Yucheng Development, Nanshan Holdings, Caixin Development, and Everbright Jiabao [1] Company Summary - Greenland Holdings has reached the daily limit down, indicating significant investor sell-off and market concerns [1] - Yucheng Development, Nanshan Holdings, Caixin Development, and Everbright Jiabao have also seen declines, reflecting a broader negative sentiment in the real estate sector [1]