The foreign agents were known at the time as "supercargos" in English and as "daban" () in Chinese. This term's Cantonese pronunciation, "tai-pan", only came into common English use after the rise of private trading from 1834 on. A private captain might be his own supercargo; a large East Indiamen might have five or more, which were ranked "chief supercargo", "2nd supercargo", and so on. A team of supercargos divided their work, some overseeing sales, others tea purchases, silk purchases, and so forth. Permanent supercargos might divide their work by the order ships arrived. The bookkeepers who attended them were called "writers"; those serving with the ship, who also checked these accounts, "pursers".