"But he was a keen-eyed observer. He noticed that the Portuguese had landed artillery to protect the area in which Christians lived. On a visit to a Portuguese vessel to see Father Coelho he observed that the ship, though small, was heavily armed. He was also well aware of the interest that the western daimyos were manifesting in the arms and equipment of the Portuguese and of their attempts to strengthen themselves by friendship with the foreigners. Hideyoshi acted with firmness and in 1587 the activities of the missionaries were prohibited throughout the length and breadth of Japan."