Was the location of the later three countries' struggle limited to the Korean Peninsula?

 Have you seen Taejo Wang Geon? It's a epic historical drama that ended at the end of February 2002. - I watch it, but it's annoying every time I watch it. When interpreted according to history, the story of history does not continue, so it creates something that does not exist.     First, Wang Geon's army... No, is it Gung Ye's army? Then, Gyeonhwon's troops fight each other with Joryeong and Jukryeong in between. If you take this as it is, it seems natural. This is a strategic point, so shouldn't we occupy each other? He said it was an important place even during the Japanese Invasion of Korea in 1592.   It is interpreted in the current peninsula that Hubaekje gave up both the wide plains of Chungnam and the shortest distance and confronted it with cavalry in the mountain valley. Normal operations should have war in the blue direction above, but the current interpretation is said to be made of orange arrows.       However, Jukryeong and Joryeong on the peninsula may be strategic points, but this is a key point in preventing forces from entering Gyeonggi-do and Seoul from Japan, that is, Gyeongsang-do, not from Jeolla-do. If you look at the map, there is no reason to fight a war in Jeolla-do through ordinance. Even if it's a military hub, it's not a place to put it anywhere. The key point depends on which direction the enemy is blocked.     It is said that all battles at that time take place in this area (Seonsan, Gumi, Chungju, etc.). However, if he were a normal king, would he try to secure this place? It is said that the capital of Hubaekje at that time was Jeonju now. If so, isn't it right to attack Wansanju (Jeonju) right away if the Chungnam region was Gungye or Wanggeon's territory at the time?     Throughout the ancient war, any country will attack the enemy's capital first. This is because the war must be ended quickly. The Korean War was like that, and the war between Su, Tang and Goguryeo was like that.Whether it's World War II...      However, Goryeo-gun is trying to occupy a rugged mountainous area without looking at the wide Honam Plain and the enemy's capital right in front of it. For that reason, the reason is that it is a military hub mentioned earlier, but once you open the map, it is not an area where Goryeo and Hubaekje will argue at all. I wonder if it is true that the battle took place only there.      Based on the current Jeolla-do region, Hubaekje Islands also took away the plains of Chungnam to secure economic power and military beauty, and attacked the capital of Goryeo for the shortest time, and I don't think they would sacrifice themselves beyond the ordinance. Furthermore, both Goryeo and Hubaekje's main forces are cavalry, and all the places where the battle took place are mountainous areas. There is no reason to mobilize cavalry in the mountain war. This means that the boundary between Goryeo and Hubaekje at the time was not mountainous. However, when I moved to the peninsula, it became a funny thing. Also, teaching it right without thinking, and defending it sometimes leads to ridiculous historical interpretations.   Also, since our current history limits our rivers to the peninsula, absurdly, there is a scene where we fight each other in the wrong place...     Jukryeong at that time is not the current Jukryeong. 500 ri north of Jukryeong, which Goguryeo Yeon Gaesomun asked Kim Chun-chu to return, is not on the Korean Peninsula, but the gist of the continent's midfield. History is common sense. No matter how hard you try to distort history, history will leave its mark somewhere.