He always used to say, 'It's easy to say, but hard to do.'

He is good at expressing his feelings well.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

The Paleogene period was a very important time in the history of the Earth.

They destroyed the castle gate using a battering ram.

He is good at devising strategies for siege warfare.

Mr. Gohyakujo is my best friend.

There are no words to describe that beauty.