The Nara period covers 75 years from 710-784 AD. Emperor Shōmu moved the capital to other places such as Kuni-kyo and Shigaraki-kyo in the period between 740-745 AD. The imperial buildings and government offices were drastically transformed around this period. In the later Nara period, the audience hall was erected in the eastern part, at the south side of the imperial domicile. This is called the latter audience hall. A number of buildings in the imperial domicile and the government offices were replaced and renovated several times. This was probably not due to the repair of the old buildings but due to another reason.