You can try this method, in which using the Slack to send the requiring url and retrieve the download link, to get the paper of CNKI.

Visit the following webpage, and using email to access the workspace

https://shui.azurewebsites.net/bdwk/

However I already tried, I couldn't get access the download link, others actually did it.... I hope you have luck with this...

please let me know if this worked