金史
Poor Jurchen families in the southern Routes (Daming and Shandong) Battalion and Company households tried to live the lifestyle of wealthy Jurchen families and avoid doing farming work by selling their own Jurchen daughters into slavery and renting their land to Han tenants. The Wealthy Jurchens feasted and drank and wore damask and silk. The History of Jin (Jinshi) says that Emperor Shizong of Jin took note and attempted to halt these things in 1181.