sentences:  According to official report, the museum house Chinese calligraphy, porcelain, bronzes, paintings, jades and many other artifacts, with 22% (2,972 out of 13,491 crates) of the boxes originally transported south from the Forbidden City.Other additions include transfers from other institutions, donations, and purchases made by the museum.A lot of these artifacts were brought by Chiang Kai-shek before his Kuomintang forces fled the mainland in 1949.