Bring your own photos or take them now?

Of course, you can bring wedding photos, but you must meet the requirements. When taking this photo, you should take two inches, and then you should take three photos with a red background. If you take a wedding photo at an outside shooting agency, you can communicate with the photographer and explain that this photo is used to make a marriage certificate photo. They will tell you what you want. When taking a marriage certificate, two people should pay attention to their clothes. You'd better wear something formal. It doesn't matter if it's not official. You must wear neat clothes. For example, you can choose white or light-colored clothes, which can be well distinguished from the red background.

People's Republic of China (PRC) Civil Code

Article 1046 Marriage shall be voluntary by both men and women, and it is forbidden for either party to force the other, and no organization or individual may interfere.

Article 1047 The age of marriage shall not be earlier than 22 for men and 20 for women.

1048th lineal blood relatives or collateral blood relatives within three generations are prohibited from getting married.

Article 1049 If both men and women want to get married, they should apply for marriage registration in person at the marriage registration office. Those who meet the requirements of this law shall be registered and issued a marriage certificate. The marriage relationship is established when the marriage registration is completed. Those who have not registered for marriage shall re-register.

Article 1050: After a registered marriage, a woman can become a member of the man's family and a man can become a member of the woman's family according to the agreement of both men and women.