Last name is Xie Jiu. What should I call Xie Jiu?

Boys: Xie Jiujia, Xie Jiuyi, Xie Jiuqiang, Xie, Xie Jiuren, Xie Jiuguo, Xie Jiuxin and Xie Jiuzhi.

Girls: Xie Jiuxin, Xie Jiuhui, Xie Jiuwen, Xie Jiumei, Xie Jiuping, Xie Jiujing, Xie Jiufang, Xie Jiuyuan and Xie Jiushu.

Please adopt it, thank you!