Shim-pua marriage (Taiwanese: sin-pū-á, sim-pū-á) was a Taiwanese tradition of arranged marriage, in which a poor family (burdened by too many children) would sell a young daughter to a richer family for labour, and in exchange, the poorer family would be married into the richer family, through the daughter. The girl acted both as an adopted daughter (to be married with a young male member of the adopted family in the future) and free labour. Due to the lower-class status of the girls, discrimination was often present, and slavery-like treatment was not uncommon.