Many people ask if an SEO site doesn't need updates after it's done, or if it won't require any management. Actually, that's not true. Even if your SEO optimization is done very well, it doesn't mean that you don't have to maintain and manage it. Today, a friend of mine said that after optimizing one keyword, he left it alone without further care. After one or two months, Baidu still gave it a ranking. This is indeed true.