im not sure
The North China Plain is also known as the Great Plain of China. Great China Plain is not a name that is commonly associated with the place.
The Great Wall of China surrounds the West, North and East of Beijing, in China
Originally the Great Wall separated the borders between China and Mongolia. As of 2014 China owns the territory on both sides of the Great Wall however the wall passes into parts of North Korea.
Yes it is located in the North China PLain.
To defend China from people from the north on horse.
The Great Wall of China was built in north because the military threat it was intended to defend against was north of China.
it has an 18,000 kilometer coast line
Korea (both North and South) is between China and Japan.
The distance between the North and South poles
It depends on the side you are facing, however, China is south of the Great Wall, as the Great Wall's main objective was to keep the Mongolians out of China and Mongolia is north of China.
The Yalu River is the border of China and North Korea.
The distance between the above places is 7689 miles. This distance is point to point straight distance. The actual distance may vary according to the flight path chosen. Also this is not the airport to airport precise distance.