Shanhaiguan is located in the northeast of Qinhuangdao City, Hebei Province 15km, so it is named after the mountains and seas. This is the throat of Northeast China and North China, the first pass at the starting point of the Great Wall in Wan Li, and it is called "the first pass in the world" together with Tongguan in Shaanxi.

Shanhaiguan is an ancient cultural city. The walls of the Ming Dynasty were basically intact, and most of the main streets and alleys were well preserved. In particular, a number of quadrangles have been preserved, making the ancient city more elegant and simple. The first gate in the world, the East Gate of Guancheng, stands on the Great Wall and overlooks the four fields. On the second floor of the tower, you can overlook Shanhaiguan City and the panoramic view of Yuan Ye outside Shanhaiguan.

2. Tongguan

Tongguan is located in the north of Tongguan County, Weinan City, Shaanxi Province, with the Yellow River in the north and the mountainside in the south. It has a long history and is famous far and near. As the throat of North China, Central Plains and Northwest China, the ancient Tongguan Pass ranks second among the top ten famous passes in China, is the east gate of Guanzhong, the only way to go out of Chang 'an in the west and Luoyang in the east, and has always been a battleground for military strategists.

Tongguan is one of the most famous passes in ancient China. Guan is located in the eastern part of Guanzhong Plain, which is an important place at the junction of Qin, Jin and Henan provinces. The situation in Tongguan is very dangerous, with Qinling Mountains in the south. There are forbidden valleys in the southeast, and 12 Liancheng in the south of the valley; Weihe River in the north and Luoerchuan will embrace the Yellow River, and it is near Hua Yue in the west.

Surrounded by mountains on all sides, the mountains are stacked, the valleys are steep, the mountains are high and the roads are narrow, and Zhongtong has a narrow narrow path that can only accommodate one car and one horse.

3. Wushengguan

Wushengguan is located at the foot of Jigong Mountain in Dabie Mountain at the junction of Henan Province and Hubei Province. Together with Pingjingguan and Jiuliguan, it is also called "Yiyang Three Customs", which is a battleground for military strategists in past dynasties and has the reputation of "Guanzhong Customs". One of the top ten passes in China is located 35km south of Jigongshan District, Xinyang City, Henan Province, at the junction of Henan and Hubei provinces.

South lock Ezhou, north screen Zhongyuan, choke and control the north-south traffic throat. Wushengguan was called the great tunnel entrance in ancient times. Nanwushengguan was called Wuyangguan in Qi Dynasty. The Tang Dynasty called Lishan Pass, and later called Wuyang Pass. In the early Qing Dynasty, it was called Wushengguan.

4. Friendship Pass

Friendship Pass is located in the southwest of Pingxiang City 18km, formerly known as Zhennanguan, surrounded by mountains and deep Guanzang Canyon, and it is a key frontier town in the southwest of China.

Originally, there was only one layer of wooden cloister on the base of Guanlou, but it was changed into a steel-concrete structure when it was rebuilt, and two layers of cloisters were added, with an average of 80 square meters on each floor. The cloister is surrounded by large arched windows, the window lattice is decorated with various patterns, and the outer wall is covered with dark green stone rice, which looks solemn and simple.

5. Jiayuguan

Jiayuguan Pass is an important pass at the western end of the world-famous Great Wall in Wan Li. It is located in Jiayuguan City, Gansu Province, and was called "the first pass in the world" in ancient times. The plane of Jiayuguan Guancheng is trapezoidal, and a thick wall is built outside the western wall, which makes the defense of Guancheng more solid.

The city wall is as high as 1 1.7 meters, with a total length of 733.3 meters and an area of more than 33,500 square meters. There are low earth walls parallel to the north and south city walls, forming Los Angeles. There are east and west gates in Guancheng, Guanghua Gate in the east and Rouyuan Gate in the west. All of them have towers, which are 17 meters high and three rooms wide. The three floors rest at the top of the mountain, surrounded by cloisters, and the momentum is magnificent.

On the north side of Guancheng, there is a broad and inclined horse path that goes straight to Chengtou. Outside the east and west doors, there is a crock. The gate of the crock faces south, not connected with the main entrance of Guancheng. The east gate of the crock is called Chaozong, and the west gate is called Huiji. Out of Ximen Wengcheng 10 meters, there is a rectangular heavy pass, side by side with Guancheng, closed to the west, and the door is engraved with the three characters "Jiayuguan".