Everyone's smile is so ferocious. Everyone is like a clown with a mask. Under the premise of protecting himself, he will try his best to please and attack others.
What you see is the truth, not the truth.
Without regretless sacrifice, there is no natural gratitude.
Those whitewashed feelings, if used many times, are deliberately made sad, and in the end even they find their affectation, and gradually lose their usefulness.