In the meantime, Bokkai improved relations with Tang China and began sending the envoys to Changan; since Japan had maintained good relations with Bokkai, ABE no Nakamaro requested the Emperor Xuanzong of Tang to send Hironari and others back to Japan through Bokkai, which was approved.
やがて唐と和解した渤海の使節が長安に来るようになり、渤海なら日本との関係も良好だったので、阿倍仲麻呂は広成らが渤海経由で帰国できるよう唐玄宗(唐)に上奏し、裁可された。