After he served as a proofreader of hand-written Issai-kyo Sutra in the Kanto region and a lecturer at Chikushi Kanzeon-ji Temple, he went to Tang in 842 on a ship owned by Ri Shojin, a merchant of Tang.
関東での一切経書写の検校や筑紫観世音寺講師などを歴任した後、842年（承和(日本)9年）唐の商人李処人の船で唐に渡った。