Can you give me some advice? about my website.SEO?

[Jake]

From the US there was a 13 second load time using a low end DSL connection, this will cause a higher "bounce rate" (people who leave before the page has loaded) and can damage search engine ranking as well.

One study reported a 6 second load time for one site causing a 20% bounce rate, when load tie was reduced to 1/2 second buunce rate lowered to 5%.

(Google's own internal design spec calls for 1/2 second load time of their pagers)

In addition to buying links from other sites (which has some risks) adding useful content like bearing application articles can help search ranking by making the site appear to the search spiders to have value to their visitors.