## Jiangsha Period Released Used as a reference standard. For example, the "large ribbed round" should first obtain the large form, then add the body ribs at the junction of the two clay slabs. Currently produced "ribbed round" pieces have melon tails dragging on the ground, not conforming to the pattern. The "large ribbed round," due to its large surface area, may have the spout lip extend 1 millimeter above the rim opening.