When will the published papers be certified by China Knowledge Network?
That depends on what magazine you publish. For different academic journals, some are on China HowNet, and some are not. As long as the journal you choose to publish is on China HowNet, which is what you call China HowNet, your article can be found on China HowNet about two to three months after publication. If the journal is not published, your article will definitely not be published on HowNet.