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.
Winds and ocean currents do not move in straight lines because of the Coriolis Effect.
They are different because of there population or because of there environment but they are also the same because they both are strongly reliant on agriculture for there exports and income!! Hope that helped:))