He drew an octadecagon shape.

The Eighth Route Army played an active role in China's war against Japan.

My birthday is on the twenty-eighth.

He is writing a thesis on the octovocalic theory.

My father is thirty-eight years old.

The historical Yayoi no Mai was often seen at ancient festivals.

In order to maintain health, it is important to eat until you are eight parts (out of ten) full.

I will hold my birthday party on the eighteenth.

He is a master of Bajiquan.

Daihasshu is an ancient place name in Japan.