Under the early ritsuryo system such conferences usually took place in the chodo-den (Imperial court), however, in the Heian period, they were held more frequently closer to a dairi (Imperial Palace) as emperors led their lives mainly in a dairi.
律令制初期においてこうした会議は朝堂殿で行われることになっていたが、平安時代に天皇の生活が内裏中心になるにつれてより内裏に近い場所で会議が開かれることが増えていった。