My boyfriend gave me a gift.

Everyone was surprised by the news.

You must never show this secret key to anyone else.

He encrypted the message using a public key.

Let's exchange keys tomorrow.

The crashed ice game is very exciting.

He likes to take a walk in the park at dusk.

We should always remember the power of Kannon in difficult times.

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.