Now let's look at the disadvantages: 1  You don't know where the makeup air is coming from. 2  Contaminants from an attached garage or moldy crawl space can be pulled into the house. 3  Ventilation air probably won't be mixed or distributed well. 4  The only filtration that happens is through the building enclosure.
The Qing Dynasty (1644â1912) was the last Chinese dynasty, and the longest dynasty ruled by foreigners (Manchus from Manchuria, northeast of the Great Wall).
The Emperor and His Ambitions. The Ming dynasty (1368-1644) was a Chinese dynasty with a Chinese imperial family, as distinct from the dynasty that came before it (the Mongol, or Yuan, dynasty of Chinggis and Khubilai Khan) or the one that followed it (the Manchu, or Qing, dynasty).