 Because the strings were often accepted without being checked for damaged coins and coins of inferior quality and copper-alloys these strings would eventually be accepted based on their nominal value rather than their weight, this system is comparable to that of a fiat currency.Because the counting and stringing together of cash coins was such a time consuming task people known as "qiánpù" (錢鋪) would string cash coins together in strings of 100 coins of which ten would form a single "chuàn".The "qiánpù" would receive payment for their services in the form of taking a few cash coins from every string they composed, because of this a "chuàn" was more likely to consist of 990 coins rather than 1000 coins and because the profession of "qiánpù" had become a universally accepted practice these "chuàns" were often still nominally valued at 1000 cash coins.