According to the law, if mainland residents divorce voluntarily, both men and women should go to the marriage registration authority where one party's permanent residence is located to register for divorce. Therefore, as long as one of the two parties has a registered permanent residence in Weinan, it is OK.
If Chinese citizens and foreigners divorce voluntarily in the mainland of China, and mainland residents divorce voluntarily with Hong Kong residents, Macao residents, Taiwan residents, and overseas Chinese in the mainland of China, both men and women shall jointly go to the marriage registration authority in the place where the permanent residence of mainland residents is located to register for divorce.