No copywriting
Impromptu essay, write as soon as you think of it
It is probably the brainchild of left-behind children whose parents work outside the home, their daily lives, and the brain damage after the second child.
I, the protagonist, and my second child - known as Brother Yao
We have had a harmonious relationship since childhood, loving each other and supporting each other along the way. (Actually, they fight each other from childhood to adulthood, falling in love and killing each other.)