Yu Xiaomin said while eating, "Xu Manman and Jiang Chengxu went to get their marriage certificate today."
Nowadays, you have to go to the county to get a marriage certificate, but both the village and the commune must issue a proof. Of course, many people don't care about it and won't get a marriage certificate. If you want to get married, both families just set up two tables for a banquet, invite friends and relatives, make a declaration, and that's considered married.
A case like Xu Manman and Jiang Chengxu was caught on the spot by people, and the production team had also said they should quickly get their marriage certificate.
It's also because neither of them were old enough to get a marriage certificate, but it wasn't possible to force them to host a wedding feast, so getting a marriage certificate was the best option.
