They expanded the business network across the country by starting in business not only in Ise Province, where their headquarters were placed, but also in the so-called three cities, Edo (now Tokyo), Osaka and Kyoto since the latter half of the 16th century, in the Azuchi-Momoyama period.
安土桃山時代の16世紀後半から、本所となる伊勢以外にも江戸、大阪、京都などいわゆる三都に出店し日本全国に商売のネットワークを広げていった。