In statistics, the concept of autocorrelation is very important.

He is learning karate for self-defence.

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

She has an autoimmune disease.

He has a strong desire to be in the spotlight and always wants to be the center of attention.

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.