Did Han Hong's mother have children later?
No. According to Netease.com, Han Hong's biological mother is Yong Xi. When Han Hong was 6 years old, his father died of illness and Yongxi remarried. Yongxi was only 34 years old when he remarried Poirot. Because of the busy performance, he didn't have a baby. Polo supported Yongxi's choice and never brought trouble and pressure to Yongxi.