Why did yongle move the capital to Beijing
Yongle, who was the third emperor of the Ming dynasty, moved the capital to Beijing for strategic and symbolic reasons.
Strategically, Beijing offered a central location for the empire's administration and military power. It was also closer to the northern frontier, which was vulnerable to invasion from Mongol and Manchu tribes. The move to Beijing allowed Yongle to be closer to the military action, and to better protect the empire from threats.
Symbolically, the move to Beijing was a statement of power and legitimacy. Beijing had been the capital of the Yuan dynasty, which was overthrown by the Ming. By making it his capital, Yongle was asserting his authority over the former rulers and showing the world that the Ming dynasty was here to stay.
Additionally, Beijing was seen as a more auspicious location according to Chinese astrology, with favorable geomantic features thought to bring prosperity and good fortune. Overall, the move to Beijing was a strategic and symbolic decision that helped to solidify Yongle's power and the legitimacy of the Ming dynasty.