East Asia, the Indian Ocean, and even as far as the African coast.
Yongle also transferred the dynasty’s capital from Nanjing back
north to Beijing, where it been located during the Yuan, and from
this location he devoted considerable energy to extending the court’s
influence and authority into the region of the northern steppe. Be-
tween 1410 and 1424—coinciding closely with Zheng He’s mari-
time expeditions—the emperor launched a series of military cam-
paigns against the Mongols. These attacks did not fundamentally
alter the balance of power between the Ming and the Mongols,
however. After the emperor died during the fifth and final cam-
paign, in 1424, Yongle was succeeded by a series of rulers who gen-
erally lacked his strength and ambition, and the court shifted from
a strategy of military offensives to a reliance on tributary relation-
ships with its neighbors.
The diplomatic crisis that provides the immediate historical
backdrop for King Hu’s Dragon Gate Inn was the product of a se-
quence of events that could be traced back to the appointment, in
1439, of a Mongol by the name of Esen Tayisi as leader of a tribal
confederation known as the Oirats. Esen moved quickly to expand
his influence within the region, and he also began dispatching in-
creasingly elaborate tributary missions to Beijing, thereby requir-
ing the Ming court to devote proportionally more resources to
hosting the missions and reciprocating with “gifts” in return. The
strain these tributary missions placed on the Ming court was exac-
erbated by a series of natural disasters in the 1440s, including mul-
tiple droughts, floods, famines, and bouts of pestilence and locust
plagues, which affected virtually all regions of the country. The
final straw came in 1448, when the Zhengtong emperor’s tutor and
chief eunuch, Wang Zhen, rejected an Oirat tribute, owing to what
he felt to be the excessive compensation the Mongols were asking in
return. During the ensuing negotiations a Chinese interpreter sug-
gested that perhaps a solution could be reached that would involve
having one of Esen’s sons marry a Ming princess, but when Esen
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