What paper should I pad under the brush?

I have also practiced soft pen calligraphy. I don't need to put any paper under it, but I need to put some felt under it. In ordinary stationery stores, you should be able to buy ordinary wool felt with good quality and low price, that is, eleven or two pieces, that is, thirty or forty pieces. If you just practice casually on a whim, you don't need to buy any felt mats. Just put some unwanted newspapers on them. Of course, it will still seep into the felt mats, but it won't. Whatever ~