Note: This is the final segment in a four-part series by Eccentric Yoruba about Ancient Africa & China, cross-posted with her permission. Also, check out parts 1, 2, and 3.
Zheng He’s 7th expedition was his last and after years of moving back and forth between the East African coast and China, all contact ceased. Some people may look at this and say that the Chinese turned their backs on Africa, but if you look at the situation within China in that time, it sheds more light on this situation.
In 1424, the Yongle Emperor died. His successor, the Hongxi Emperor (reigned 1424–1425), decided to curb the influence at court. Zheng He made one more voyage under the Xuande Emperor (reigned 1426–1435), but after that Chinese treasure ship fleets ended. Zheng He died during the treasure fleet’s last voyage.
…Chinese merchants continued to trade in Japan and southeast Asia, but Imperial officials gave up any plans to maintain a Chinese presence in the Indian Ocean and even destroyed most of the nautical charts that Zheng He had carefully prepared. The decommissioned treasure ships sat in harbors until they rotted away, and Chinese craftsmen forgot the technology of building such large vessels. (Source.)