The next year, he initiated a campaign at "Seonggyungwan" to expel Jeong In-hong (정인홍, 鄭仁弘) in power from the Registry of Confucian Literati (청금록, 靑襟錄), who had criticized the great scholar Yi Hwang. On the contrary to his wish, he was expelled from the institution. He had to move to Jamgok-ri (잠곡리, 潛谷里), Gapeong-gun, Gyeonggi-do, and became a farmer to make a living. He studied harder than before in a self-exile. During that period from 1613 to 1623, Gim Yuk, denying King's pardoning, managed to get along, and experienced and witnessed the real peasant life in the countryside. In 1623, a military coup by the Westerners faction succeeded to dethrone King Gwanghae. And a new King Injo (인조, 仁祖. 1595 - 1649 r.1623 - 1649) was enthroned. In consequence, the public officials ousted by the previous government returned to the newly organized administration. Gim Yuk in seclusion was the first among them. He was appointed to a post in the royal law enforcement organ (의금부, 義禁府). But he was not satisfied with it. In 1624, Gim Yuk passed Gwageo, the literary civil service examination, receiving officially the highest marks. Now, he started his official career both at Hanyang and in the country. During the rebellion by Yi Gwal (이괄, 李适) in 1624, he escorted King Injo to Gongju. After the incident, Gim Yuk served at Eumseong-gun, Chungcheong province and various ministries in the capital city. When he left Eumseong, its inhabitants were thankful to his good governance and erected a commemorative monument. In January 1627 when Late Jin (later Qing dynasty) mounted up a military pressure (정묘호란, 丁卯胡亂) on the northern territory of Joseon, Gim Yuk asserted to put the first priority to alleviate the residents' burden by suspending the resident registration law.