Meanwhile, in 1179 when discord between the Taira family and the Cloistered Emperor Goshirakawa deepened, Motofusa MATSUDONO and Kanezane KUJO, with the intention of the Cloistered Emperor who thought the funds the Taira family got through the Sung currency was the source of their emergence, insisted on banning the circulation of the Sung currency as 'they are not coins that (Japanese) Imperial Court issued and they are the same as Shichusen (counterfeit money)'.
ところが、平家と後白河法皇の確執が深まった治承3年（1179年）、宋銭による資金力が平家を台頭させたと考える法皇の意を受けた松殿基房や九条兼実が「宋銭は（日本の）朝廷で発行した貨幣ではなく、私鋳銭（贋金）と同じである」として、宋銭流通を禁ずるように主張した。