Mushu is a fictional character from Disney's Mulan franchise. He first appeared in the 1998 animated film Mulan and later appeared in the sequel, Mulan II.
The character is depicted as a small Chinese dragon who served as a spiritual guardian for Mulan's family until he was demoted for failing to protect an ancestor. In the original film, Mushu attempts to redeem himself by ensuring Mulan's safety and success when she joins the army in her father's place, eventually becoming her best friend.
In the sequel, Mushu attempts to sabotage Mulan's impending marriage in an effort to remain her guardian. Although the user prompt identifies Mushu as a city in China, the provided source material clarifies that it is a fictional character rather than a geographical location.