The Xuande Emperor (宣德 [ɕɥántɤ̌]; Beijing, 16 March 1399[1] – 31 January 1435) was Emperor of China from 1425 to 1435. His era name means "Proclamation of Virtue".
Born Zhu Zhanji, he was the eldest son of the Hongxi Emperor and Empress Cheng Xiao Zhao. Xuande was also fond of poetry and literature. Unlike his father, the Xuande Emperor (r. 1426–35) decided to keep Beijing as the capital and rule the dynasty in the style of his grandfather, Yongle. He ordered Zheng He to lead another maritime expedition to continue the Yongle Emperor's golden age.
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Xuande's uncle Zhu Gaoxu, Prince of Han had been a favorite of Yongle for his military successes, but he disobeyed imperial instructions and in 1417 had been exiled to the small fief of Le'an in Shandong. When Zhu Gaoxu revolted, the new emperor Xuande took 20,000 soldiers and attacked him at Le'an. Zhu Gaoxu surrendered soon afterward. Zhu Gaoxu was reduced to a commoner and died from torture. Six hundred rebelling officials were executed, and 2,200 were banished. The Emperor did not wish to execute his uncle at the start, but later events angered the Emperor so much, that Zhu Gaoxu was executed through fire torture, and all Zhu Gaoxu's sons were executed as well. It is very likely that Zhu Gaoxu's arrogance, which is well detailed in many historic texts, offended the Emperor. A theory states that when the Emperor went to visit his uncle, Zhu Gaoxu intentionally tripped the Emperor.
Emperor Xuande wanted to withdraw his troops from Annam, but some of his advisors disagreed. After Chinese garrisons suffered heavy casualties, the Emperor sent Liu Sheng with an army; but they were badly defeated by the Annamese, losing 70,000 men in 1427. The Chinese forces withdrew, and Xuande eventually recognized the independence of Annam. In the north Xuande was inspecting the border with 3,000 cavalry troops in 1428 and was able to retaliate against a raid by Mongols. The Chinese let Arughtai's Eastern Mongols battle with Toghon's Oirat tribes of the west. Beijing received horses annually from Arughtai; but he was defeated by the Oirats in 1431 and was killed in 1434 when Toghon took over eastern Mongolia. The Ming court then maintained friendly relations with the Oirats. China's diplomatic relations with Japan improved in 1432. Relations with Korea were generally good with the exception of the Koreans resenting having to send virgins occasionally to the Ming court's harem. Xuande allowed Zheng He to make one more voyage; but such maritime expeditions by eunuch captains ended in 1434.
The Xuande Emperor ruled over a remarkably peaceful time with no significant external or internal problems. Later historians have considered his reign to be the Ming dynasty's golden age.