What does it mean to lock the most beautiful chain and be a bird in a cage that belongs to only one person?

Answer: A caged bird is a bird trapped in a cage. Caged birds are eager to fly freely, to return to nature, to return to a quiet environment, and to have romantic love. Its heart is full of simplicity, innocence and longing, and its wings have been bound by the cold reality, watching countless birds fly freely and sing happily. I am extremely disappointed in my heart.