He proceeded land reclamation of Inbanuma Pond and Teganuma Pond by investing merchant capital, and encouraged foreign trade in Nagasaki, but at the same time promoted product development such as roasted sea cucumbers and dried abalones (tawaramono) for the purpose of reducing the export of gold and silver from Japan.
町人資本による印旛沼・手賀沼の干拓事業、さらに長崎貿易を推奨し、特に俵物など輸出商品の開発を通じて金銀の流出を抑えようとした。