books.google.com.au - The reign of Emperor Yongle, or "Perpetual Happiness" -- which began with civil war and a bloody coup, and saw the construction of the Forbidden City, completion of the Grand Canal, and consolidation of the imperial bureaucracy -- was one of the most dramatic and significant in Chinese history. In 1368...http://books.google.com.au/books/about/Perpetual_Happiness.html?id=OuSsxBuALQYC&q=prince%E2%80%99s&utm_source=gb-gplus-sharePerpetual Happiness