平安時代、朝廷では多くの儀式が行われていた。
In the Heian period, many ceremonies were held at the imperial court.
鎌倉幕府の成立後、朝廷の力は次第に弱まった。
After the Kamakura shogunate was established, the power of the imperial court gradually declined.
遣唐使は唐の朝廷に国書を届けた。
The envoys to Tang China delivered a state letter to the Tang court.