Otsugu also proposed to limit the messengers from Bo Hai (a country) whose diplomatic mission became weaker and became almost commercial and who only troubled the residents of the areas where the messengers passed through.
また、外交的な意味が薄れて半ば商用と化し、通過先の住民を煩わせるだけとなった渤海(国)からの使者の制限を提案している。