Internal links from the site's home page define the general site's sections and serves as one of the most important factors of site ranking. External links tie the site with other sites and determines the site's theme. Relation of external links to internal links influences the distribution of the site's rank for search engines. It's desirable that the amount of internal links prevail.
Jiuzheli.net is a domain controlled by two name servers at cn28cn.cn. Both are on different IP networks. The primary name server is dns1.cn28cn.cn. Jiuzheli.net has one IP number.