Who is the person who can't see through?

People who can't see through are people with closed hearts.

Closed-minded people are unwilling to communicate with others. They lack self-confidence, are timid, introverted or too conservative. These people are often reluctant to reveal their inner world, do not like to share their feelings and ideas with others, and do not want to listen to other people's opinions. Even if others observe and understand them very hard, it is difficult to really understand their inner world, and even feel at a loss. They will also be called "people who can't see through". People with closed hearts should try to open their hearts, bravely express their thoughts and feelings, and establish good communication and trust with others, so as to better integrate into society and enjoy life.