You don't have to buy these. Just use your own. I'll just use my own, and no one will check it. But it's still troublesome to carry so many lines with you.
In addition, whenever the school starts, there are mattresses for sale, ranging from 60- 100. Although the quality is average, it is quite convenient. You can think about it. If you buy sheets and quilts, you can go to the "clothing city", which will meet many needs of your four years in college. Clothing, shoes, hats, cloth, department stores, hardware and electrical materials are readily available. If you want to go, you can take a tricycle at the door, and you can get there for 6 yuan. Of course, a taxi will do. This is the starting price. You can also walk through the black university for fifteen minutes. If you are a freshman in Black University, it is really not easy to get lost on foot. Better have company.
I wish you a happy start of school!