Are you south, middle or north? I am from Jiangnan, with heavy humidity, cold in winter and no heating. I like to use the brand of Little Sheep, because the price is not expensive and the quality is guaranteed. Personally, I think we should first cover a close-fitting thin and thick quilt (a ten-hole quilt with silk, cotton and down), and then add a slightly heavier blanket to hold it down. The key is that the quilt should be close to the body, so that it will be warm without air leakage. The quilt should be big enough.