This website is based on the design principle of accessibility and uses keyboard shortcuts to strengthen the browsing convenience Layout is divided in 3 areas：
1. The main menu zone at the top.
2. Middle text display.
3.the related information zone at the bottom.
The following keys are set as the Access keys ( or speed keys) of this website.
Alt+U：Top area displaying the link with main items and back to homepage.
Alt+L：Left aide link area.
Alt+C：Main content area shows the content of each page.