Understanding the 'u-onbin' is important for learning Japanese.

He was working on that project round the clock.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

He is working round the clock.

Could you tell me your postal code?

Please put the letter in the post office box.

He packs his homemade jam into bottles.

I bought stamps at the post office.

I want to go to Saint Vincent and the Grenadines.

He said, 'The advantages of heaven and earth are nothing compared to the harmony among people,' emphasizing the importance of teamwork.