This can be seen in the fact that Taiho Ritsuryo (Taiho Code) - which had been chosen and implemented before the transfer of the capital to Heijokyo - was reviewed and adapted in various ways so that it would be more suitable for real Japanese society.
平城京への遷都に先立って撰定・施行された大宝律令が、日本国内の実情に合うように多方面から検討し変更されるなどから上記が分かる。