What methods do pregnant women have to test boys and girls?

Look at the shape of the belly: you can look at the shape of the belly in the second trimester. (I looked at my stomach every day, hehe), this self-test method is a bit accurate, because my stomach was really round when I was pregnant with my daughter, and my second son's stomach was flat and sharp, especially in the morning.

Appearance measurement of pregnant women: when pregnant for 5.6 months, look at the face. If you are as beautiful as before, the chances of girls are high. If the face is dark and dull, the chances of boys are high. When I was pregnant with my son, my skin was indeed darker than when I was not pregnant, and my armpits were also darker. When I was pregnant with my first daughter, my skin did not change, just like when I was not pregnant.

Collection of boys and girls in Qing Dynasty: Many people say this is accurate. I used it, too. Not at all. And my sister-in-law also measured it in this way, and it is not allowed. The result is just the opposite. I won't say anything because I feel uncertain.