Sitemap
This site is built based on accessible web development guidelines, the website can be divided into three blocks:
1. Upper functional block, 2. Central content block, 3. Lower functional block.
Accesskey settings：
Alt+U：Upper functional block, including dataset menu, high-value thematic zones, etc.
Alt+C：The central content area is the main content area of this page.
Alt+Z：Lower functional block, providing quick links and other related information of this website.
If your browser is Firefox, the accesskey is Shift + Alt + (shortcut letter), for example, Shift+Alt+C will jump to the central block of the webpage, and so on.