The external chain is an important means to improve the website ranking. There are various ways to increase the external chain, among which the blog external chain is the favorite of many webmasters. For example, Sina Blog has become the first choice for webmasters to optimize the external chain because of its fast collection, high weight, simple application and easy use. But many webmasters reflect that their Sina blog is not favored by Baidu, and the articles published on the blog are not included by Baidu, just started