Take our place as an example. Changing the age means changing the registered permanent residence and raising the age (both the personal page of the registered permanent residence and my ID card should be changed). The general procedure is as follows: first, I will issue three certificates in the village Committee where I live: XXX, a villager in my village, was actually born on a certain day in a certain year. This is to certify and seal. Then report to the local police station for approval, go to the county public security bureau for approval, and then report to the municipal public security bureau for approval. Other places should be similar.

It is best to have a certificate from the first-level village Committee, but it is not so good at the second, third and fourth levels, because the hukou and age are more sensitive. Minors and adults are not the same concept, nor are those who have crossed the marriage line and those who have not, so their age will not change easily.

It is relatively ok to have acquaintances or hard relationships.

If it is not necessary, try not to change it. Asking for people everywhere, you can't spend less money, and your body and mind are very tired. I hope it helps you.