In October and November of 1596, peace talks between Ming Dynasty and Japan were in the final stages, but when fraud by diplomats on both sides was revealed during the Minshi ekken (audience with an envoy from the Ming Dynasty) by Hideyoshi, and the negotiations failed, Hideyoshi once again ordered the warlords to dispatch troops.
慶長元年（1596年）9月に日明和平交渉は大詰めを迎え、秀吉による明使謁見で双方の外交担当者による欺瞞が発覚して交渉が破綻すると秀吉は諸将に再出兵を命じた。