Name the desert regions in arabia and china that are uninhabited

The desert regions in China that are largely uninhabited are the Iner Mongolia region on the north of the country, and the Xinjiang region on the west of the country.
Saudi Arabia is a country that in most part is uninhibited and people are concentrated  in the cities which are surrounded by desert and some partially from sea. The most uninhabited regions are Northern Borders, Jawf, Bahah and Najran.

The figure is not necessarily a parallelogram because only one diagonal is bisected and only one pair of sides is congruent.