First of all, he obtained approval from the bakufu (Japanese feudal government headed by a shogun) to make 'Kanei Tsuho' (coins) in Ishinomaki and make profit by distributing them within the territory in 1727.
まず、享保12年（1727年）に幕府の許可を得て「寛永通宝」を石巻で鋳銭し、それを領内で流通させることで利潤を得た。