This website is built according to the principle of accessible web design. The main
contents of the website are divided into two main blocks: 1. The upper function
block, 2. central content block.
The accesskeys for this website are set as follows:
Alt+U(Chrome、IE), Alt+Shift+U(Firefox)： the upper function blocks, including Back
to Homepage, Site Navigation, Languages, etc.
Alt+C(Chrome、IE), Alt+Shift+C(Firefox)： the main content block is the main content
area of the page.