元末明初，日本沿海地区一些失意封建主，纠集浪人、海盗等，武装骚扰中国和朝鲜沿海，杀人放火，抢劫财物，史称“倭乱”。明朝初年及至中叶，中国东部和北部沿海屡遭倭寇袭扰，其“来若本狼，去若惊鸟，烧伤歼淫，戒掠财务，无恶不作”。据《倭变事略》载：明洪武十二年（１ In the late Yuan Dynasty and the early Ming Dynasty, some frustrated feudal lords in Japan’s coastal areas gathered ronin and pirates, armed them to harass China and North Korea along the coast, murdered and set off their belongings, and called it the “Japanese invasion.” From the beginning of the Ming Dynasty to the middle of the Ming Dynasty, the eastern and northern coasts of China were repeatedly harassed by Japanese pirates. According to “Japanese Affairs” contains: Ming Hongwu twelve years (1