Analysis on Sunshine Optimization of Traditional Dwellings

? Ningxia is located in the northwest inland, with little precipitation, so the roof slope is small; (3 points) Winter is cold and long, winter and spring are dry and windy, northerly winds prevail, there is no north window, and the wall is thick, windproof and warm; (4 points) The windows in the south are larger, so as to light and receive more sunlight in winter and raise the indoor temperature. (3 points)

Investigate the geographical reasons for the formation of folk houses in northwest China. The big window facing south is for lighting. The wall is thick, generally there is no north window, which can prevent sand and keep warm; The small span of the roof is because it is located inland and there is little precipitation.