The story is as follows:

Once upon a time there was a cute little bear who liked summer very much, especially watermelon. Whenever summer comes, the little bear can't wait to eat sweet watermelon.

One day, the little bear was walking in the forest, and suddenly he discovered a huge watermelon. The little bear jumped with joy and decided to share this discovery with his friends. So, it found a group of happy balloons and told them that a huge watermelon was waiting for them.

The balloons were very excited when they heard about it, and they flew downwind to where the little bear was. When the balloons arrived, they saw the huge watermelon and were amazed. The little bear smiled and invited them to taste this delicious fruit.

While they were enjoying the watermelon, a little bird flew over and was curious about the party between the bear and the balloons. The bear enthusiastically invited the bird to join, and the bird readily agreed.

The birds and the balloons shared the watermelon together. They talked and laughed and had a good time. The bird also sang cheerful songs, adding more fun to the party.

After the party, the bear, balloon and bird became best friends. They decide to hold a special party every summer to enjoy watermelon and happiness together.

Since then, every summer, the bear, the balloon and the bird will get together and spend a happy time. Their friendship was forged because of the giant watermelon and became a lasting memory.

This story tells us that when we are willing to share and tolerate, friendship will make our lives better. Whether it's a bear, a balloon or a bird, they all learn the importance of each other and derive real joy from it.