Once upon a time, there lived a teacher in a small town. Once he told four of his students to go to a small farm to see apple trees in different seasons. After they came back, they described their feelings to the teacher. The first student said that there were no leaves on the trees. It made him very disappointed. The second student said his eyes were full of light green. It made him feel hopeful. The third one disagreed. He said the sweet smell of the beautiful flowers spread everywhere. The last one said he only saw a lot of apples on the trees. The teacher smiled and told his students that none of them were wrong. He continued, "The trees are not the same in different seasons. You can't judge (判) a tree by only one season. Don't let the regret of one season destroy the beauty of the rest."