The origin of the Chodoin, the most important facility in the daidairi, can be traced back approximately to Emperor Suiko's Oharida Palace, which consisted of the three palaces: the daigokuden (council hall in the imperial palace), the chodo (the Imperial Court), and the choshuden (waiting hall for officials in the imperial palace).
推古天皇の小墾田宮（おはりだのみや）あたりに原型が見られ、大内裏の最も重要な施設であり、大極殿、朝堂（ちょうどう）、朝集殿（ちょうしゅうでん）の3種の殿舎からなっていた。