Provincial governors paid a portion of the tax returns from their provinces to the king. Dutch visitors to Kongo in the 1640s reported this income as twenty million nzimbu shells. In addition, the crown collected its own special taxes and levies, including tolls on the substantial trade that passed through the kingdom, especially the lucrative cloth trade between the great cloth-producing region of the "Seven Kingdoms of Kongo dia Nlaza," the eastern regions, called "Momboares" or "The Seven" in Kikongo, and the coast, especially the Portuguese colony of Luanda.