This website is built according to the principles of accessible web design. The main content of the website is divided into four parts. The shortcut keys of this website﹝Accesskey﹞The settings are as follows：

• 1

  The upper functional block is the upper main menu area of this website.

  Alt + U
• 2

  The central content block is the main content area of the page.

  Alt + C
• 3

  Site search.

  Alt + S
• 4

  The upper functional block is the upper menu area of this website.

  Alt + M

When the item tab of this website cannot be clicked with the mouse, you can use the following keyboard operation methods to browse the data

• 1

  ← → or ↑↓：Press the left and right keys or the up and down keys to move the tab order.

  ← ↑ ↓ →
• 2

  Home or End→：You can jump directly to the first or last item of the label.

  Home End
• 3

  Tab：After staying on the tab, you can use the Tab key to jump to the content to browse the data. When encountering the radio button, please use the ← → or ↑↓ keys to move the item order.

  Tab + ← ↑ ↓ →
• 4

  Tab + Shift：Press Tab + Shift to jump back to the previous data; when jumping back to a tab item, you can continue to use the ← → or↑↓ keys to move the tab order.

  Tab + Shift