The title of the website must not change frequently

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My website "The first English Hundred School Alliance" originally title is "First English hundred School Union-Middle School English, online learning, English teaching and research, interactive communication", but considering our project involves English training this piece of content, so yesterday and the website editors consulted, changed to "First English Hundred School Union-Middle School English, online learning , English training, English teaching and research ", the result of the situation is, after 1 hours, in Baidu query keyword" First English ", originally ranked second in the home page position, all of a sudden retreated to the third of the third position.

This change to remind the building station friends, in the beginning to determine the keyword and site description must think well, can not be changed to go, or it will cause in the search engine ranked changes, my site changed 3 times, this decision is no longer changed, concentrate on doing content. Welcome friends by the way to see my English learning site: www.1steng.com