What is the formula for giving birth to boys and girls?

You can do the math. I did it when I was pregnant. I counted a girl and it turned out to be a girl. I think it's quite accurate. You can do the math. Forget it when you're pregnant. I counted the boys and it turned out to be boys. Calculation formula of boys and girls, prediction table of boys and girls, chart of boys and girls in Qing Dynasty. Forecast table of boys and girls in Qing Dynasty, forecast table of boys and girls in Qing Dynasty, forecast table of boys and girls in Qing Dynasty, forecast table of boys and girls in Qing Dynasty, forecast table of boys and girls in Qing Dynasty and forecast table of boys and girls in pregnancy.