He made a protest about Japan's seat being the second after the Tibetan Empire on the west side, although Shiragi (ancient Korean kingdom) was the first on the east side, which meant Shiragi's precedence over Japan, so he forced to exchange the position with Shiragi so that he could preserve Japan's honor.
日本の席次が西畔（西側）第二席で吐蕃王朝の次であるのに対して、新羅が東畔第一席で日本より上席であったことに抗議し、新羅と席を交代させ、日本の面目を守っている。