There are 3 differences between babies "crawling first and then walking" and "not crawling then walking" when they grow up. Parents should pay attention to them.
Children don’t cry when they enter kindergarten just because their mother insists on doing four things. The scientific method can be used for reference
Deng Yingchao was pregnant and chose to abort the child for the sake of revolutionary work. Due to some strange combination of circumstances, she could no longer conceive a child.