What happened to Chinese exploration after Zheng He's death?

Zheng He, also known by the names Ma He and Ma Sanbao, was born around 1371 in Yunnan province in China. He was the second-oldest son of a devout Chinese Muslim family; the family name "Ma" was derived from the Chinese rendition of the name Muhammed. Zheng He’s family claimed to have been related to an officer that served in the army of Genghis Khan.

In 1381, Zheng He was captured and forced to serve as a eunuch in the emperor’s court. By 1390, he had distinguished himself as an accomplished soldier, skilled in war and diplomacy. Because of his skills, the emperor conferred a new name for Ma He - Zheng He.