When Gensho SHU in Ming sent to Imperial Prince Kanenaga a sovereign's message that SHU required to have Imperial Prince Kanenaga suppress the pirates called wako (Japanese pirates) that were active in Kyushu around that time, at first, Kanenaga refused.
明の朱元璋がこの頃北九州で活動していた倭寇と呼ばれる海上勢力の鎮圧を要求する国書を懐良親王に送ると、懐良ははじめは断った。