What divides Asia and central Asia?

The Karakoram range of the Himalayas forms India's northern border and separates south Asia from the rest of Asia.

Japan is to the north west of Asia.

If I am not mistaken, i do believe it is located in Central Asia. Leaning more to the East. But not Eastern Asia. It is in China.In the middleActually, Gobi desert is in Mongolia.

South Asia and Central Asia are divided because of that barrier and that barrier is still unanswered. By:cherrell East

There is none similarity.