Although not as a student but as a hangan of the envoys to Tang China, Hironari, who had traveled across several countries for six years, was one of the best intellectuals in Japan in those days and appointed an important position from the Imperial Court.
留学生ではなく遣唐使の判官とはいえ、6年もの間海外諸国を渡り歩いた平群広成は当時の日本では屈指の知識人であり、朝廷から重用された。