In a small village in Denmark, there lived a little boy named Peter. Peter was a lively and cheerful child, but sometimes he could also be a bit naughty. One day, he decided to play in the valley near the village. In the valley, there were lush trees and a clear brook flowing gently.
Peter came into the valley. He thought it was so quiet here that it was a bit boring. So, he had a sudden idea and wanted to shout out loud in the valley. He took a deep breath and then shouted with all his strength, "Hello!" His voice echoed in the valley, "Hello... Hello... Hello..."
Peter was startled by the echo. At first, he thought there was another person in the valley responding to him. A little angrily, he shouted again, "Who are you?" The valley also sent back the same voice, "Who are you... Who are you... Who are you..." Peter thought this voice was very unfriendly, and he began to shout and scold loudly towards the valley, but the responses coming from the valley were also all equally unfriendly.
Peter was very depressed. He sat on a stone and began to think about why the "person" in this valley was so unfriendly. After a while, he decided to try again. This time, he smiled and shouted towards the valley in a very friendly voice, "Hello, friend!" Immediately, a gentle response came from the valley, "Hello, friend... Hello, friend... Hello, friend..."
Peter was extremely happy. He found that when he treated the echo in the valley friendly, the echo also became very friendly. Since then, every time Peter came to the valley, he would talk to the valley with a friendly voice, and he would also share his joys and sorrows with the valley. He understood a truth that as long as you treat others friendly, others will also treat you friendly.
Peter told this truth to the other children in the village. At first, the children didn't quite believe it. So, Peter led them to the valley. Just like Peter at the beginning, the children first shouted unfriendly towards the valley, and the valley also responded with unfriendly voices. Then, when they shouted with friendly voices, warm responses also came from the valley. The children were all very surprised and also understood the power of friendliness. Since then, the children in this small village have all become more friendly. They know that whether it is dealing with the echo in the valley or the people around them, friendliness is the best way.