detail rules cover all situations will be several paragraphs long, so just
state your specific case and you can get a simpler yes or no answer.
Assuming the most common situation for question like this -- child was born
in an European country when both parents are visitors, yes, child's US
immigrant visa number can be charged to that European country if child is
the principal applicant/beneficiary or spouse of the principal applicant.
If child is the derivative to the China-born parent's petition, child's I-
485 approval still needs to wait upon/after parent's I-485 approval using
parent's PD and country.