The largest desert in Asia is the Gobi Desert. The Gobi Desert spreads more than 800,000 square miles through Northern China and into Mongolia.
The Gobi Desert is crossed by the famous Silk Road, passing through several famous trade cities like Turfan. The area only receives around 7 inches of rain per year. The Himalayan Mountains block rain clouds from reaching the desert area. The winds that move across the desert cause it to expand rapidly, taking over the farm land that borders it quickly. The sand is able to take over the farm land, because the sand destabilizes the soil and causes it to erode and become unstable.