@__philipn__ @edsuom I saw the tissue box thing there. Did you try just taping a surgical mask to a fan. Seems like the simplest thing that might work. There are some fans with higher static pressure too, but maybe don't need it with a quality SM.
@__philipn__ @edsuom 我在那里看到了纸巾盒。你试过把外科口罩贴在风扇上吗？似乎是最简单的可行方法。也有一些风扇的静压较高，但质量好的 SM 可能不需要它。