He spent the latter part of his life in Takeo, where in 1834 he became a student of Shuhan TAKASHIMA for the first time as a feudal lord in Japan to study Western gunnery and science and technology, while making a great impact on Naomasa NABESHIMA, the lord of the Saga Domain, thereby leading to the development of advanced military and technical power of the Saga Domain in the end of Edo period.
後半生は武雄領に戻り、天保5年（1834年）、日本の封建領主で最初に高島秋帆に弟子入りして西洋式砲術や科学技術を究めるとともに、佐賀藩主鍋島直正に大きな影響を与え、幕末期の佐賀藩の高度な軍事力・技術力開発のさきがけとなった。