This site built by the principles of accessible web design, site's main content is divided into three blocks:
1 top of the functional blocks, 2 left navigation block, 3 blocks of the central content.
This website shortcuts(Accesskey) set as follows:
Alt+U：top of the function blocks, including Home, WebSite Map, mobile version selection,area-based site's main menu.
Alt+L：Navigation on the left block, area-based site's sub menu.
Alt+C：Central content block, the main content area of this page.
Alt+Z：Block the link below, this website links and other contact information and so on.