China is very large and has a double nature, namely the Eastern and the Western parts. The division can be compared to the convection rolls, taking tectonic drift direction into account. The intersection between two circular zones divides China into two totally different parts. The border between China and India/Nepal is shaped exactly like the coastline of China. The amazing result is that most of Chinese territory is found within two circular effect zones with exactly the same radius, intersecting each other.
To fully understand this you must take all the Eurasian Plate into account.
Resulting in this simple drawing:
Please compare and find out more.