《明史·日本传》即《明史》卷三百二十二外国传日本条,关于十五世纪前半中日朝贡贸易关系有这样一段记载:“永乐初,诏日本十年一贡,人止二百,船止二艘,不得携军器,违者以寇论。乃赐以二舟,为入贡用,后悉不如制。宣德初,申定要约,人毋过三百,舟毋过三艘。”这就是迄今为止的史籍中所谓的永乐宣德要约。对于这个所谓的永乐宣德要约,我 “History of Ming and Japanese Biography”, “History of Ming Dynasty,” Volume 322 Foreign Minister of Japan, on the first half of the fifteenth century, the tributary of trade relations between China and Japan have such a record: “Yongle early, Zhao Japanese tribute ten years, only two Hundreds of ships, the ship only two, shall not carry the military device, the offender to Kou theory. But thanks to the two boats, for the tribute use, after all, not as good as the system .. Xuande initial declaration of the offer, no more than three hundred people, the boat without Three. ”This is the so-called history books so-called Yongle Xuande offer. For this so-called Yongle Xuande offer, I