Webnovel doesn't allow you to publish your own novels, for now, however, a few months ago there was a competition where aspiring writers submitted 20 or so chapters. When the final results come out, the top 3 writers will be allowed to write and publish their novels on Webnovel.
Although Webnovel may implement this feature, I don't think it will happen in the near future, so I advise that you either continue working on your novel in private or publish it on Royalroadl, Fanfiction.net or some other similar website.