What were the maritime patterns of the Chinese before 1450?

Before 1450, Chinese maritime patterns were characterized by extensive trade networks connecting China to regions like Southeast Asia, the Indian ocean, and East Africa. Chinese ships, such as the famous Treasure Ships of Zheng He, were used for these expeditions which sought to establish diplomatic ties, showcase Chinese power, and conduct trade. These maritime activities were often state-sponsored and carried out under the command of imperial officials.