First of all, when we choose keywords, don't choose those that are too competitive, so even if we can sit on them, it will be very unstable. Secondly, if our keyword ranking has been successful, we should constantly update the content in online earning, build high-quality off-site links to maintain the stability of keyword ranking, and don't use some means that violate the rules of search engines to maintain the long-term stability of keyword ranking when optimizing.