The biggest feature of flyupload is that its interface looks very clean, and as a foreign file upload service, the speed is still quite fast. Although it doesn't "fly" as the name suggests, compared to many similar foreign services, it's already pretty quick. I tested it, and it was about 25k/s. The size limit for a single file is 500MB (actually, I've always thought that if you really want to upload successfully, no one would use the web method to upload something larger than 100MB).