This website is based on the design principle of accessibility and uses keyboard shortcuts to strengthen the browsing convenience Layout is divided in 4 areas:

(1)Top Zone

(2) Left Side

(3) Center Zone

(4) Bottom Zone

The following keys are set as the Access keys ( or speed keys) of this website：

Alt＋U（Mac: Control＋Alt＋U）：Upper block.

Alt＋L（Mac: Control＋Alt＋L）：Left Side.

Alt＋C（Mac: Control＋Alt＋C）：Main content.

Alt＋Z（Mac: Control＋Alt＋Z）：Bottom Zone.

Alt＋S（Mac: Control＋Alt＋S）：Full text search.

If you using firefox browser set as the Access keys ( or speed keys) of this website：

Alt＋Shift＋U（Mac: Control＋Alt＋U）：Upper block.

Alt＋Shift＋L（Mac: Control＋Alt＋L）：Left Side.

Alt＋Shift＋C（Mac: Control＋Alt＋C）：Main content.

Alt＋Shift＋Z（Mac: Control＋Alt＋Z）：Bottom Zone.

Alt＋Shift＋S（Mac: Control＋Alt＋S）：Full text search.

Every page on the site can be navigated via the keyboard, without any need for a mouse.

Tab ：Pauses after this label, may move using the Tab key to the content page glances over this material, meets when the radio button please coordinate to use ← → or ↑↓to move the project order。

Tab + Shift ：Presses Tab + Shift to be possible the round trip migration to the previous material;When moves to the label project you may continue to use ← → or↑↓to move the label order