The Palace was surrounded by big tsujibei (a mud wall with a roof) about five meters high, and the wall had twelve gates named after local ruling families names such as Suzaku-mon Gate, and government officials entered the Palace through the gates.
周囲は5ｍ程度の大垣が張り巡らされ、朱雀門はじめ豪族の氏名にちなんだ12の門が設置され役人らはそれらの門より出入りした。