Hoppo. This is a tribunal, that has in charge the collecting of imperial dues on navigation and trade, and remitting the amount to the Grand-hoppo at Canton... at Macao, the Portuguese designate him by the epithet Grand-hoppo, in contradistinction to another... [T]he Hoppo of Macao... levies on foreigners, coming and going, an arbitrary tax on their persons and baggage. He is assisted by compradors, pilots and others...
1836, Anders Ljungstedt, An Historical Sketch of the Portuguese Settlements in China..., pages 86–90