The museum collection--featuring bronzes, pottery, porcelain, paintings and calligraphy--is so vast that only a small proportion can be displayed at one time, while the remainder is stored in vaults within the hills behind the museum.

CNN: ASIANOW - TIME Asia | Travel Watch

Over time, three major pottery types developed: earthenware, stoneware and porcelain, each distinguished by the type of clay used and the temperature at which it is fired.

FORBES: No. 16: The Pot