This chart was found buried a Royal Institute of China by the Chinese Scientists about 700 years ago. You can choose to get a baby or a girl by following the chart. The women age from 18 to 45 years as the horizontal columns, while the month when the baby is concerned or when the pregnancy starts are in the same columns. X stands for male and O stands for female for instance, if the women is 27 years old and her baby is concerned in January according to the Chinese Calendar then the baby will be a girl. The accuracy of the chart has been proposed, thousand of people, and it is believed to be 99% accurate of course, you can verify, this by reckoning the month your children were concerned and the age of your wife at that time.
MONTH | AGE 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 |
JAN | O | X | O | X | O | X | X | O | X | O | X | O | X | X | X | O | X | X | O | X | O | X | O | X | O | X | X | O |
FEB | X | O | X | O | X | X | O | X | O | X | O | X | O | O | O | X | O | X | X | O | X | O | X | O | X | O | X | X |
MAR | O | X | O | O | X | O | X | X | X | O | X | O | O | X | X | X | X | O | X | X | O | X | O | X | O | X | O | X |
APR | X | O | X | O | O | X | X | O | O | X | O | O | O | O | O | X | O | X | O | X | X | X | X | O | X | O | X | O |
MAY | X | O | X | O | X | X | O | O | O | O | O | X | O | O | O | O | O | O | X | O | X | X | O | X | O | X | X | O |
JUN | X | X | X | O | O | O | X | X | X | O | O | X | O | O | O | O | O | O | O | X | O | O | X | O | X | O | X | O |
JUL | X | X | X | O | O | X | X | O | O | X | X | X | O | O | O | O | O | O | O | O | X | O | X | X | O | X | O | X |
AUG | X | X | X | O | X | O | O | X | X | X | X | X | O | O | O | X | O | X | O | X | O | X | O | X | X | O | X | O |
SEP | X | X | X | O | O | X | O | X | O | X | X | X | O | O | O | O | O | O | X | O | X | O | X | O | X | X | O | X |
OCT | X | X | O | O | O | O | O | X | O | X | X | O | O | O | O | O | O | O | X | O | X | O | X | O | X | X | O | X |
NOV | X | O | X | O | O | X | O | X | O | O | O | O | X | O | O | O | X | X | X | O | X | O | X | O | X | X | O | X |
DEC | X | O | X | O | O | O | O | X | O | X | O | O | X | X | X | X | X | X | X | X | O | O | O | X | O | X | O | X |