He worked on the project with assiduity.

I am planning to go to Botan next week.

The history of Handan is very old.

That lone plane is flying in the sky.

He headed for the enemy's castle as a lone horseman.

He has a quick-tempered personality and gets angry quickly.

He has a short temper and gets angry quickly.

He learned the art of forging and made his own sword.

He forged a sword in the blacksmith.

He is interested in space exploration.