 However, this is not true of all pieces classified as "doucai", especially from the 18th century onwards.Fragments of incomplete examples, only done in blue, have been excavated from waste tips at the kiln.The next development, "Famille verte" (康熙五彩, "Kangxi wucai", also 素三彩, "Susancai"), adopted in the Kangxi period (1662–1722), uses green and iron red with other overglaze colours developed from "wucai", normally without any use of underglaze blue.