The year when hyo (unit of the local administration) and county were established should be reviewed since "Kokufucho shi" indicated that 'it was intentionally selected the lucky year to establish hyo.'
なお、評・郡の設置年については、『国府町誌』が「意図的に吉祥年を選んで立評の年にあてている」と指摘するように検討の余地がある。