(three) the chain will be enough "quality".
(two) the content of the website is enough "quality".
in our website optimization, the most afraid of the problems is undoubtedly right down, K and a series of problems in the punishment, especially fall right and be K two, the restoration work is quite easy. So this time many webmasters will want to ask how to make the site to avoid the search engine drop right? Today I will solve this problem and to share some experience, I hope to help you.
(a) stable and secure server.