1. Geographically, it is the first pass at the east starting point of Wan Li Great Wall.
2. Geographically, it is easy to defend but difficult to attack because of its proximity to the sea and mountains.
3. The plaque on the gate of Shanhaiguan has five words: the first pass in the world.
Shanhaiguan, the eastern starting point of the Great Wall, has become the representative title of "Guan" since Ming and Qing Dynasties, especially in modern history. The mountains and seas are separated by 7.5 kilometers, the Great Wall runs through the north and south, and Shanhaiguan City is near the pass. The mountains in the east are the natural barriers of the Stone River in the west and become natural moats, thus forming a veritable strategic location.
Extended data:
Shanhaiguan, also known as Guan Yu, Guan Yu and Lu Linguan, is located in the northeast of Qinhuangdao City, Hebei Province 15km, and is one of the northeast passes of the Great Wall of Ming Dynasty.
1990 was considered as the starting point of the eastern end of the Great Wall in Ming Dynasty. It is known as one of the "three wonders" of the Great Wall of China (Shanhaiguan in the east, Beitai in the middle and Jiayuguan in the west) and "the first pass in the world" and "the throat of the border county is guaranteed by the capital", which echoes Jiayuguan thousands of miles away and is famous all over the world.
In the 14th year of Hongwu in Ming Dynasty (138 1 year), the city was built, the customs were built and the guards were set up, so it was named Shanhaiguan. Shanhaiguan city is about 4 kilometers in circumference, connected with the Great Wall and taking the city as the gateway. The city is 14 meters high and 7 meters thick, with four main doors and various defensive buildings. Including "the first pass in the world" Arrow Tower, Jingbian Tower, Muying Tower, Lulin Tower, Wengcheng and 1350-meter-long Great Wall of the Ming Dynasty Plain.
1961March 4th, Wan Li Great Wall-Shanhaiguan was announced by the State Council as the first batch of national key cultural relics protection units. 1987 65438+February, the Great Wall was listed as a world cultural heritage.
References:
Baidu encyclopedia-Shanhaiguan