On Saturday, my mother and I went to the park. When I went to the park, my mother and I saw the bird seller. The birds seem to say, "Come and let me out, little master, and I will repay you."

My mother and I are thinking: what are the benefits of birds? I said, "mom, birds can catch pests and spread seeds to farmers' uncles." "So, my mother and I went home and made a board together, which read: Don't keep birds, birds are good friends of human beings. I took this board to the park, and the bird sellers in the park saw that they had put the bird back into nature, and the bird could fly freely in the sky.

I know I shouldn't keep birds, because birds are friends of nature.