明仁宗
The Hongxi Emperor was hostile to the undertaking of the treasure voyages. On 7 September 1424, he terminated further treasure voyages. He kept the treasure fleet, which retained its original designation , as a part of Nanjing's garrison. On 24 February 1425, he appointed Zheng as the defender of Nanjing and ordered him to continue his command over the treasure fleet for the city's defense.