Ancient fluctuations and present fluctuations were different.

 "The fluctuations of ancient times and the fluctuations of the present were different." It is often used as an argument for various theories, including the theory of Hansagun, which was used by the so-called "Jaeya historians" at the insistence of some scholars.   Professor Yoon Nae-hyun's "Gojoseon Study" was discovered while searching through various books to find out the authenticity of this claim in his own way. Professor Yoon Nae-hyun argued that fluctuations in ancient times were different from now-that is, fluctuations in ancient times refer to Nanhai movement, and it seemed to be used as an important argument for the Great Empire Gojoseon he claims. However, after a brief review of this, it was judged that this was groundless.   As is well known, all claims that fluctuation originally means "far east" and was different from the current fluctuation area originate here. In other words, fluctuations at the time had the meaning of referring to a part of the eastern periphery of ancient China.  Therefore, it is reasonable to think that there is a mistake in understanding this as the current location in relation to the river that requires this.   However, the problem is that if fluctuation means "far east," it can be seen that it is not related to a specific river, but Professor Yoon Nae-hyun argued that in ancient times, the movement of "nanha" would have been called fluctuation and Yoseo.     If fluctuations mean far east-east of China, it is reasonable to point to the western part of China, that is, the current Gamsukseong area, but it is absurd to distinguish between Nanha movement and Iseo by applying the later geographical concept of fluctuations based on the river.   Then, why is it called "Nanha"? It was that the so-called "Galseoksan Mountain" in various literature, including the unification of the Qi Dynasty, is located around here.  In other words, since the eastern end of Jangseong Fortress is Galseoksan Mountain, the current Liaoshi region, where Galseoksan Mountain is located, was the fluctuation of the time, and Nanhaiseo, the west of it, was the Yoseo of the time.   It was said earlier that it was not divided into fluctuations and yoseo based on the river at the time, and although it was widely known in academia that the generals of the national era actually existed much north of Galseoksan Mountain and proved to be ruins, it was quite difficult to accept that Galseoksan Mountain was the eastern end of the fortress.   Moreover, when I explained Galseoksan Mountain in the second half as the basis for the fact that the fluctuations of ancient times and the current ones are different, I was quite disappointed that there was an expression close to the same word repetition.         As can be seen from the expression of the war between China and Goguryeo in the early days as "Jeongyo," the word Liaodong itself has historically sometimes referred to the entire Manchuria. From books such as "Yodongsa", it would be right to say that Yodong originally pointed to a vague range in the eastern periphery of China, but after about one time, the interest of Chinese forces in this area increased, and thus the geographical understanding increased.  In other words, I think it is more reasonable to see that the current yaw and the entire fluctuation were included in the ancient 'fluctuation'.