This paper analyzes cross-border marriages between mainland China and Hong Kong (HK). We examine the effects of a reduction in cross-border marriage costs following an increase in marriage-migration quotas and the handover of HK to China. We find that cross-border marriages mainly involve men from the low tail of the HK attribute distribution. We also find that HK women's position in the marriage market and within households deteriorated following the reduction in cross-border marriage costs, and that their disadvantaged position exerts an incentive effect on their labor market behavior. These outcomes are consistent with our matching model.