The great mother of the motherland, the children of the east, west, north and south, what does the child mean?

Great mother of the motherland, children from east to west, north and south, children refer to everyone in China. Great Motherland, Children in East, West, North and South is a sentence in the poem "Our Motherland is Really Big", which tells the story of China's vast territory and rich resources, thus inspiring children to love the motherland, so children refer to everyone in China.