尊敬的老师：
我给父母办绿卡，在填i485表的时候有一个重要问题需请教。 i485问 birth city and country. In my my parents' 出生公证，出身地是：中国安徽省合肥市（Hefei, Anhui province, China). However, in their passport, birth place is only listed as : Anhui, China. City is not mentioned on their passport. I suppose that I should put down city and country as asked by i485. However, passport are their only photo ID是, should I fill i485 according to their passport?
Should I put "Anhui, China" on the i-485 or "Hefei, China" as their birth place?
非常感谢！