The Main Hall originally had three bays in width and four rafters in depth. It was expanded into two connected chambers during the Jiajing reign of the Ming Dynasty: the front audience hall and the rear sleeping chamber.
The front hall has a curved roof with overhanging gables, while the rear hall adopts a single-eave hip-and-gable roof. The two parts are connected by a composite roof structure.
Eight coloured statues from the Yuan Dynasty are preserved inside. The seated statues of Hutu and his wife stand 2 metres tall in the centre, flanked by six maid statues each 1 metre high.
A horizontal plaque inscribed with "Famous Minister of Sanjin" hangs above the central bay of the front eaves.
The side hall on the left houses seated statues of the Black and White Dragon King and their wives.