Jangdae is a command post, and Hwaseong Fortress has two jangdaes: Seojangdae and Dongjangdae. Built between July 15 and August 25, 1795 (the 19th year of King Jeongjo’s reign), Dongjangdae was also called Yeonmudae, “a training ground for the martial arts.” It is a good spot, with its low-lying, open lands, to watch over the interior of the fortress from the east.