The survivors presented the Imperial Court with a diplomatic message from guno (a second highest rank of the court rank) Bugei DAI (Dae Muye) of Bokkai, in which Bugei declared that Bokkai was established after the fall of Koguryo and that asked for good neighbor relations with Japan.
彼らが提出した渤海郡王大武芸の国書には、渤海を高句麗の再興であると宣言し、日本との友好善隣を求めていた。