He was presented with a purple canonical robe by the King of Wu-yueh (銭俶), specially permitted to learn at Shitendai (an astronomical observatory) and returned to Japan in 957 with approximately 1,000 Buddhist and secular books and a Futenreki (the Futian calendar table) of Shin rekiho (a new method of making calendars) which had not been introduced to Japan.
呉越王銭俶から紫衣が贈られて司天台（天文台）で学ぶ特別な許可を与えられ、957年（天徳(日本)元年）日本に伝わっていない新暦法の符天暦と内典・外典約1000巻を携えて帰国した。