The map of China is as follows: China's terrain is high in the west and low in the east. It is complex and diverse. The proportion of various types of terrain in the country's land area is: mountains 33.3%, plateaus 26%, basins 18.8%, plains 12%, and hills 9.9%.

The terrain tilts toward the ocean, which on the one hand facilitates the moist airflow from the ocean to penetrate deep into the inland and form precipitation; on the other hand, it causes many large rivers to flow eastward, connecting east-west transportation and facilitating economic connections between the coast and the inland.

Extended information The division of Chinese provinces 1. Rough divisions The division lines of Chinese provinces were initially roughly divided based on mountains, rivers and rivers. The Tang Dynasty divided the world into ten divisions based on mountains, rivers and rivers.

The dividing line between Hebei Road and Henan Road is the Yellow River. Because cars and boats were inconvenient in ancient times, people in ancient times rarely traveled to distant places, and population mobility was particularly low.

If population mobility is low, local culture will emerge.

In order to avoid this contradiction, we roughly divided it according to mountains, rivers and rivers.

2. Fine division Shaanxi’s division is the epitome of fine division.

Shaanxi is divided into three parts: Northern Shaanxi, Guanzhong and Hanzhong.

Guanzhong is a land of four fortresses. It is easy to defend but difficult to attack, and it is also self-sufficient. It was once called the capital of the feudal dynasty.

But there is one drawback in Guanzhong, and that is the harassment from the northern nomads.

In order to solve the threat in the Hetao area, northern Shaanxi was included in Shaanxi, so that there was a buffer zone, and the Hetao could be left in the west, and Shanxi and other places could also use this to support Guanzhong.