The Chinese birth calendar is a traditional method of predicting the sex of a baby based on the lunar calendar. It is believed that the baby’s sex is determined by the combination of the year, month, and day of the mother’s last menstrual period. The Chinese birth calendar has been used for centuries in China and other Asian countries.
There is no scientific evidence to support the accuracy of the Chinese birth calendar. However, many people believe that it is a fun and interesting way to predict the sex of their baby. The calendar can also be used to determine the Chinese zodiac sign of a baby.