Over the course of 1403, Fujian, Jiangxi, Zhejiang, and Huguang's provincial governments as well as Nanjing, Suzhou, and other cities' military garrisons were ordered to begin construction of ships.
Sepanjang 1403, pemerintahan-pemerintahan provinsial Fujian, Jiangxi, Zhejiang, dan Huguang dan garisun-garisun militer Nanjing, Suzhou, dan kota-kota lainnya diperintahkan untuk membangun kapal-kapal.