Go to the website http://www.downloadhelper.net/ with Google Chrome, then click “Install” and “Install 126.96.36.199 from Chrome Web Store”. (Please use VPN network)
Please login your Google account. (If you have logined, turn to Step3)
Click “Add to Chrome” (添加至 Chrome ) and then click “Add extension”.
After about 30 seconds, the plug-in will be installed successfully, and you can see it in the extensions.
Right click in the video area, then click “Video DownloadHelper” and “xxx MB – MP4”
Click “Use Browser” and the video will be downloaded.