A little girl was lying on the window sill, and the people watching the window were burying her beloved puppies. She couldn't help crying and sorrowful. When her grandfather saw this, he quickly led her to another window and let her enjoy his rose garden. Sure enough, the little girl's mood suddenly became clear. The old man held up his granddaughter's chin and said, "Child, you opened the wrong window. ". The old man said "you opened the wrong window" to tell the little girl? ['People should understand the problem from different perspectives.', "The environment has a great influence on a person's emotional state.", 'Get rid of failure and pain by changing perspectives.', 'Different perspectives on the world will lead to different moods.']