He is proud of that title.

In Japan, the era name is used to represent the reign of the emperor.

This old document uses a lot of symbols.

His posthumous name was 'Emperor Kenmei'.

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

What is his regnal name?

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Zhuyin fuhao is a phonetic notation used in Taiwan.

The Schläfli symbol is a part of geometry, used to represent the shape of polyhedra.