This website is established upon the principle of barrier-free website design, and the primary content of its website lay is found in 2 major categories ：

(1) top Block Area，Blind-leading brick is found at the left-handed side of upper selection menu。
(2) Content Area ，Blind-leading brick is found at the immedaite upper side of the content area。

Alt+U：Top Block Area。
Alt+C：Main Block Area。