As we all know, the formation of boundaries between provinces in China can be described as "interlaced", and even natural boundaries such as Qinling and Huaihe have not become the provincial boundaries of China.
Vietnam, which is in line with Chinese history and culture, is known in ancient times as "Southern China", but the provinces follow the natural boundaries of mountains and rivers, and the shape is very regular.
Chinese provinces form borders according to "canine teeth interlaced". This is a tradition from more than 700 years. Mongolian divides Chinese provinces for the first time. The existing Shaanxi province in China can be regarded as the originator of canine teeth interlaced. Since Vietnam was not conquered by Mongolia, the principles of the borders of each province were different from those of China.
Below is the topography and administrative division map of Vietnam.
From the map above, it can be seen that the 63 provincial administrative regions of Vietnam are basically based on the boundaries of mountains, rivers and rivers, and the administrative regions of each province are also natural boundaries and natural areas.
Compared with Vietnam, there are several strange places in the administrative divisions of various provinces in China:
- Henan Province: Some are located north of the Yellow River
- Jiangsu Province, Anhui Province: Double crossing the Huai River and the Yangtze River, Tianchang City is even more strange.
- Gansu Province: the land spans four major geographical areas , extremely narrow and long
- Shaanxi Province: the originator of staggered canine teeth and the highest realm across geographical areas...
and China's provincial boundary that "creates obsessive-compulsive disorder" is Vietnam Socialist Republic The provincial boundaries are also inherited from history and are regarded as "pleasant to the eye".
Northeast Vietnam Taiyuan Province 's southern provincial boundary, officially a natural mountain range. This is not only the provincial boundary, but also the boundary line between northeast Vietnam and the Red River Delta of .
Vietnam's Chiang Kai-shek Province has an area of almost the sum of more than 10 provinces in the Red River Delta. Its north is a natural mountain range, which is the southern boundary of the Red River Delta and the dividing line between Tonkin and Central Vietnam.
Vietnam's Chengtian Hue Province and Guangnan Province - Da Nang City is an insurmountable mountain range. This is also the end point of Vietnam's north-south bipartite, and it is also the dividing line between the northern and central and southern regions.
The five provinces in the West Yuan region of Vietnam - Kunsong Province, Kalai Province, Dole Province, Denon Province, and Lintong Province. The natural boundary on the east side is completely mountain range, and it is also the boundary between the West Yuan region of Vietnam and the central southern region.
In the territory of the Socialist Republic of Vietnam, there are many administrative divisions like the above. The administrative divisions of various provinces in Vietnam are actually inherited from Vietnam's historical habits. When the Mongols conquered Eurasia, they also wanted to conquer Vietnam, but the Chen Dynasty in Vietnam defeated Mongolia three times, which also stopped the Mongols' "administrative division" concept in Vietnam.
The administrative division map of the Yuan Dynasty of China is shown below.
China's Yuan Dynasty changed the Jin Dynasty and the Southern Song Dynasty according to the administrative divisions of natural borders, and adopted the borders of various provinces with staggered teeth. Most of the provinces of the Yuan Dynasty no longer exist in China, but Shaanxi Province has indeed been preserved.
Below is the shape of Shaanxi Province of the Yuan Dynasty - it is similar to the current Shaanxi Province.
Below is the topographic map of Shaanxi Province, China. It spans the land of Loess Plateau in northern Shaanxi, Guanzhong in 800 miles Qinchuan , southern Shaanxi in southern Shaanxi, and south of the Qinling Mountains. It can be called a land of span The originator of geographical areas.
To sum up, China's administrative divisions were inherited from the Yuan Dynasty, and from the previous administrative divisions according to natural boundaries, it became a staggered shape. This situation is also the characteristic of the administrative divisions of various provinces in China. Among them, the shape of Shaanxi Province has been preserved from the Yuan Dynasty to the present day.
Since Vietnam was not conquered by Mongolia, the administrative divisions of each province are still based on the boundaries of natural mountains and rivers, which also creates the fundamental difference in the boundary principles of each province between China and Vietnam.
