His research is mainly about the ancient Chinese Kyūjitai form of 国号.

What is his regnal name?

The signal turned red, so I stopped crossing the road.

What does this code mean?

His posthumous name was 'Emperor Kenmei'.

His temple name was given after his death.

I like listening to Beethoven's Ninth.

He is good at playing Beethoven's Ninth.

This is my fourth attempt.

This is my second attempt.