Mulan's family name was not always Hua
The Ballad of Mulan never settles her surname. Later plays call her Zhu or Wei; playwright Xu Wei's "flower" Hua stuck, partly because it pairs poetically with given name Mulan—"lily magnolia." Whether she was Han Chinese or Xianbei remains an open historical argument.
Hua Mulan is a legendary Chinese folk heroine tied to the Northern and Southern dynasties (fourth to sixth centuries CE) and pictured in Jin Guliang's Wu Shuang Pu. Legend says she disguised herself as a man to take her aging father's conscription place when no other male kin was of age, served with distinction against northern nomadic foes, refused high office from the emperor, and asked only for a horse home before revealing herself. The first known written form is the Ballad of Mulan, likely composed under Northern Wei (386–535 CE) and gathered in a Southern Chen (557–589) anthology; that compilation is lost, but Song-dynasty Yuefu Shiji preserves major excerpts via Guo Maoqian's Music Bureau Collection, which cites the sixth-century Musical Records of Old and New by monk Zhijiang as source.
Most readings set the ballad in Northern Wei wars against the Rouran; a later version moves her near Tang founding around 620 CE. Xu Wei (died 1593) staged a two-act play about the heroine who enlists in her father's stead; Chu Renhuo's seventeenth-century Romance of Sui and Tang folded her into historical fiction. Northern Wei's Tuoba Xianbei rulers were proto-Mongolic steppe people who sinified while governing northern China, and compound surnames were common among them—fuel for claims Mulan was not ethnic Han. The Musical Records imply Mulan may be a surname with unknown given name; Female Mulan uses Zhu, Romance of Sui and Tang uses Wei, and Xu Wei's Hua became modern default.
She appears among Yan Xiyuan's One Hundred Beauties, yet Exemplary Women—a Northern Wei women's biography collection—does not list her, so historicity stays unsettled. Stage, novel, and film keep rewriting the cross-dressed warrior who wants a horse more than a title. The ballad's endurance lies less in battlefield detail than in that homecoming refusal of imperial reward.
Source: Hua Mulan