南洋廳
Meanwhile, the first governor of South Pacific Mandate, Toshiro Tezuka, was turning to the Oriental Development Company for assistance in reviving the economy of Saipan and rescue the former employees of two failed companies, "Nishimura Takushoku" and "Nan'yō Shokusan". With the capital from these companies and government approval, Matsue acquired the assets of Nan'yō Shokusan. In 1921 he founded Nan’yō Kōhatsu (South Seas Development Company). He trained Japanese laborers living on Saipan and others brought over from Okinawa and the Tōhoku region to clear the land, cultivate and harvest sugar cane, and build his refineries.