The Two Bridge Book House is located in Huantan Village, Evolutionary Town, because it is located between Renji Bridge and Shangmu Bridge, hence its name. The building sits in the west facing east, by the antechamber, the main hall and the composition of the courtyard pattern. Shikumen, the forehead of the "The Two Bridge Book House" four characters, the main hall roof for Yin and Yang small green tiles, brick, double-slope roof, solid tatami slate door. The patio is a triple-hearth surface. There is an old well 3 meters in front of Shikumen. Circular wellbore with square wellbore. According to local people, Erqiao Study Hall was built in the middle of the Qing Dynasty and rebuilt during the Republican period. It is the private school of the local clan Tian clan, and it is one of the few private school books in Xiaoshan.