The Great Assembly Hall, dated to 1710, a four-storey structure to the north east of the monastery, facing east, is where several religious rituals and rites are conducted. The hall measured an area of 2,000 square metres (22,000 sq ft) built with 125 pillars (86 tall and 39 short columns) and was constructed by Lhazang Qan. The entry portico had ten columns. The five chapels in this building have statues or images of Maitreya, Shakyamuni, Arhats, Tsongkhapa, and Kwan-yin with one thousand hands and eleven faces. The ancient and delicately written scriptures ‘the Gangyur of Tripitaka’ also spelt 'Kangyur' (dated 1410) in 105 volumes (original 108 volumes) written in Tibetan is the treasured possession of the monastery. It is said that Chengzhu, Emperor of the Ming Dynasty presented these scriptures (printed on wood blocks with gold cover engraved in red lacquer and made in China), to Jamchen Chojey, the builder of the monastery.