This site is committed to ensuring that its links and contents are accessible to all users.

The Accesskeys used by this site are designated as an alternative for people with disabilities.

The content of this website divides into four blocks: (1) Top nav, (2) Left block(Only if there is a submenu of the section), (3) Main content block, (4) Buttom block

The Accesskeys used by this site are as follows:

Alt+U：Top nav, containing the quick links of this site and a search box.
Alt+L：Left block, containing the links to the sections of the website.(Only if there is a submenu of the section)
Alt+C：Main content block, providing the main content of the page.
Alt+B：Buttom block, containing the information of this site.

If your browser is Firefox, you can use keyboard shortcuts by pressing Shift + Alt + (shortcut letter). For example, Shift + Alt + C will navigate to the Main Content block of the webpage, and so on.