What kind of quilts do people in the northeast cover?

Of course most of the cover of the cotton quilt, how many years is so over. Now life is better, down quilts, silk quilts gradually more, but the cotton quilt is still the absolute main force. In fact, the cold places in the northeast, the countryside is generally burning fire kang, the city heating is very high, the indoor temperature is relatively high, generally do not need a very thick quilt, this may be different from the average person's imagination. Only in each year before the heating, as well as after the stop heating each have a period of time need to cover the thicker.