Yeonkyeong Academy is established by Yi Hwang’s disciples, Maeam Yi Sukryang and Gyedong Jeon Gyeongchang under the active interest and support of Yi Hwang in 1565’s, and is the first in Daegu. Since then, as Jeong Gu’s Hangang school advances to Daegu, Yeonkyeong Academy became the center of Nakjunghak, and led learning and culture of Daegu which became capital of Yeongnam in 1601’s. Sonbi of Yeonkyeong Academy are building Jaesa(齋舍, a dormitory of Sonbi) and the Arbor(樓亭) around Nakdong river and Geumho river, and set up their lecture room, going up and down the river, flourished the Arbor culture and the Boating literature by making friends. When Imjinwaeran(壬辰倭亂) happened, they made Palgong League(八空會盟) and then tried to overcome the national crises.