Owing to Japan's invasion of Taiwan in 1616 AD, the Ming government decided to reorganize the tasks of the coastal defense in Fu-jian, thus one of the tasks was to consolidate the forces on the two sides across the Taiwan Strait. The consolidation would combine the navy in Xia-men and the navy in Peng-hu to form the Wu-peng Armad in order to firmly control the Taiwan Strait and to protect people living around the coast of the mainland. However, there were a lot of problems with this arrangement. The isolation of Peng-hu from the mainland made communication and transportation difficult. Besides, the shortage in the system of the Wu-peng Armada led to the new arrangement not working as designed. As a result, this ground breaking arrangement was abandoned by the Ming government in less than six years.