I am a Chinese student, I usually access the China Knowledge Network (http://www.cnki.net.https.hebutlib.proxy.hebut.edu.cn/) by means of off-campus access to read articles under this link can be downloaded and read online for free because our school purchased the database, but there appeared zotero connector is able to recognize but not able to save to windows 10 zotero software or directly unrecognizable.
https://s3.amazonaws.com/zotero.org/images/forums/u9787266/wacebgtipx2rvj4w4hlo.png
https://s3.amazonaws.com/zotero.org/images/forums/u9787266/5zsmvv7j4erkjc2so84f.png