The Struggle Between Silla and Goguryeo over the Danyang area in the late 4th century ~ middle 6th century

Territorial Trend among Three Kingdoms over the Danyang area was appeared in the late 4th. In 396 years, King Gwanggaeto(r.391~412) occupied 58 castle and 700 village by Baekje. At This time Goguryeo occupied Danyang area and Jungnyeong route. Since then Danyang area has established itself as a stopover for foreign negotiations Between Silla and Goguryeo in the late 4th century~middle 5th century. Also It was emerged as Goguryeo's southernmost military hub in the middle 5th century~middle 6th century. In 551.9, Silla attacked with Baekje The Han River Basin it was occupied by Goguryeo. At This time Silla occupied 10gun(郡) by Danyang departure to the via Jungnyeong route. Finally Silla occupied Danyang area in more than 551.9 ago. If we look a little more specific, Silla occupied Jeokseong Fortress in the middle and late 550 years. Jeokseong Monument of Silla in Danyang(「丹陽新羅赤城碑」) was erected at the same time. Meanwhile, The Route of Advance to Jeokseong Fortress was rich possibilities that used Jungnyeong route and Beolnyeong route at the same time.