He apologized from the bottom of his heart.

The fact is clear.

He laughed a lot when he heard the joke.

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

He was laughing at my idea in a demeaning way.

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.

He is always cheerful and believes in the proverb 'Fortune comes in by a merry gate.'

Him laughing at other people's mistakes is just like the pot calling the kettle black.

Since he is always laughing, it can be said that 'fortune comes in by a merry gate'.