When the Ritsuryo system (a system of centralized government based on the ritsuryo code) was inherited, it was adopted for training government officials and for academic research, and was taught in the Daigaku-ryo (Bureau of Education under the ritsuryo system) for the hikan (low-level bureaucrat) of Shikibu-sho (the Ministry of Ceremonial) as Myogyo-do (the study of Confucian classics).
律令制の継承に伴い、官吏養成及び学問研究として取り入れられ、式部省の被官の大学寮において、明経道として教授された。