It tells the story of a thrush who, in order to find friends and relatives and see the world at the same time, gave up a comfortable and comfortable life, escaped from the cage, experienced various difficulties and obstacles, and finally realized his wish, and grew into a self-reliant bird that has withstood the test of life. It tells the readers that children can only grow up after going through hardships.
Intention: Children will grow up only after going through hardships.