The keyboard operation instructions:
Press the TAB key to enter this block,after selecting the annual segment you want to query, press enter , The page jumps to the year segment
When you press tab to enter the time gallery display area , press the keyboard left and right keys, you can switch to the last, next stamp, the following timeline will also move together

• 1878~1939
• 1940~1949
• 1950~1959
• 1960~1969
• 1970~1979
• 1980~1989
• 1990~1999
• 2000~2009
• 2010~2019