Concurrently, northern Luzon became a center of the "Bahan Trade" (comercio de bafan), found in Luís Fróis’ Historia de Japam, mainly refers to the robberies, raids, and pillages conducted by the Japanese pirates of Kyūshūa as they assaulted the China seas. The Sengoku Period (1477–1603) or the warring states period of Japan had spread the wakō's 倭寇 (Japanese Pirates) activities in the China Seas, some groups of these raiders relocated to the Philippines and established their settlements in Luzon. Because of the proximity to China's beaches, the Philippines were favorable a location to launch raids on the provinces of Guangdong and Fujian, and for shipping with Indochina and the Ryūkyū Islands. These were the halycon days of the Philippine branch of the Bahan trade. Thus, the Spanish sought to fight off these Japanese Pirates, prominent among whom was warlord Tayfusa, whom the Spaniards expelled after he set up the beginnings of a city-state of Japanese pirates in Northern Luzon. The Spanish repelled them in the fabled 1582 Cagayan battles.