According to China Radio International, scientists at the University of Exeter and Oxford University conducted a follow-up survey of 740 women's diets, asking them to provide detailed weekly diets, including food quantity and nutrients, such as food and nutrition. Potassium, VC, VE, etc. The study found that women with cereals such as cereals and cornflakes had a much larger proportion of boys than fathers. Among women who pretend to be high-energy breakfasts during pregnancy, 59% live in boys. For women who are not mainly cereals, the proportion of boys born is only 43%.