Brother-sister relationship According to relevant data, Xiao Xucen and Xiao Wanchang are brother and sister, and their father is Jam Hsiao's father's younger brother, so Xiao Xucen and Jam Hsiao are cousins. Xiao Xucen and Xiao Wanchang once starred in the variety show "The Birth of the Actor", and their tacit understanding and performance in the show were well received by the audience.