What does this code mean?

His posthumous name was 'Emperor Kenmei'.

What is your number?

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.

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.

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

Zhuyin fuhao is a phonetic notation used in Taiwan.