He is a good correspondent, always writing letters.

He is a very diligent person.

His diligence in his work was appreciated, and he was promoted.

His disloyal actions deeply hurt his friends.

He was arrested for obstruction of public duties.

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.