Hi, my wife was born in 1987 and has a Birth Medical Certificate (chu sheng yi xue zheng ming) that was issued in 1997. As far as I understand, Birth Medical Certificates are okay starting from 1996 based on some googling (https://travel.state.gov/content/visas/en/fees/reciprocity-by-country/CH.html). Would this document then suffice for US immigration purposes, or does it also require her birthdate to be after 1996?
If not sufficient, what's the best way to obtain the Notarial Birth Certificate if we are not in China, and assuming that neither we or family members can travel back to her birthtown to obtain that document?