In 1537 when an authorized tally trade ship (Envoy Ship Dispatched to Ming China) was planned to be dispatched to Ming hosted by Yoshitaka OUCHI who was Sengoku daimyo (Japanese territorial lord in the Sengoku period) of the Suo Province, he was assigned to the vice-envoy (at this time seishi (senior envoy) was Sekitei KOSHIN).
天文(元号)6年（1537年）周防国の戦国大名大内義隆の主催により、明に勘合貿易船（遣明船）を派遣を計画した際に、副使に任命される（正使は湖心蹟鼎）。