In order to directly govern places formerly owned by Baekje or Goguryeo, 発羅州 Prefecture (prefectural capital was present-day Naju City, South Cholla Province) was established in the southwestern part of Baekje in the same way that he had established 所夫里州 Prefecture (prefectural capital was Fuyu County, South Chungcheong Province now) in the old capital Sabi, Baekje.
百済・高句麗の故地を直接統治していくことについて、百済の旧都泗沘に所夫里州（州治は現在の忠清南道扶余郡）を置いたように、百済の南西部には発羅州（州治は現在の全羅南道羅州市）を置いた。