He finished the exam without mistakes.

He finished the exam without any mistakes.

He completed the piano performance without making any mistakes.

He made a careless mistake in the test.

They appear to be antagonistic on the surface, but in reality, they are seemingly not part of the same group.

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.