These coins from the Southern Sung Dynasty and low-quality coins from the Ming Dynasty were called 'Imazeni' (Kinsen, Nankinsen), 'Kobu, Eiraku,' or 'Imazeni, Seisen,' and merchants and others who were afraid that inflation could be generated differentiated good-quality coins from bad-quality ones and came to despise the latter coins.
この南宋銭や明の粗悪な通貨を「今銭（京銭・南京銭）」「洪武・永楽」「新銭（いまぜに）・制銭」などと総称し、インフレを恐れる商人らは唐・宋（北宋）時代の良貨と区分し卑しむようになった。