failed. In 1785 he erected Changyongyeong (장용영, 壯勇營), this is the King's royal bodyguards. Before In 1782, Jeongjo selected by competitive examination some officers, who were then organized into the unit of Changyongyeong. Before this time was the Naekeunwe, royal bodyguards of Joseon dynasties created by Taejong of Joseon in 1407. But Jeongjo mistrusted the Naekeumwi, so he personally created Changyonegyeong. Renaissance King Jeongjo led the new renaissance of the Joseon Dynasty, but was initially stopped by continuing the policy of Yeongjo's Tangpyeong rule. He tried to control the politics of the whole nation to advance and further national progress. He made various reforms throughout his reign, notably establishing Kyujanggak (규장각), a royal library. The primary purpose of Kyujanggak was to improve the cultural and political stance of Joseon and to recruit gifted officers to help run the nation. Jeongjo also spearheaded bold new social initiatives, including opening government positions to those who were previously barred because of their social status. He had some knowledge of humanities and philosophy, Neo-Confucianism. One of the King's gentlemen, Kim Jong-su, imprinted onto the king and in tandem became a father figure and a great teacher for him. He studied for a long time and read various books. Jeongjo had the support of the many Silhak scholars who supported Jeongjo's regal power, including Scholars Jeong Yak-yong, Pak Ji-won, Pak Je-ga and Yu Deuk-gong. His reign also saw the further growth and development of Joseon's popular culture. Jeongjo was resolutely selected for member of Soron and Namin party, reason selection background was checks and balances, strengthening of royal authority. He was opposed to new fashions in the composition style of Korean writing and personally taught composition to some intellectuals and bureaucrats called Munchebanjong(문체반정 文體反正). In 1791, Jeongjo got report from Chae Je-gong that the people are having difficulty selling items. Jeongjo used Shinhae Tonggong to help people to raise their sales. This also abolished the Gumnanjeonguoun, which allowed some sellers in Seoul to have exclusivity. Death In his final years, Jeongjo arranged for the marriage of his second son and successor Sunjo of Joseon to Lady Kim of the Andong clan, daughter of Kim Jo-sun, but did not live to see his son's marriage. In 1800, Jeongjo died suddenly under uncertain circumstances at the age of 47, without seeing much of his life's work come to fruition under his son, Sunjo. There are many books