恶棍的复仇- "A Villain's Revenge"(Mulan Fanfiction)

What if Shan Yu never died on the roof of the Emperor's Palace? It's a year after the war against the Huns ended but when somebody in the next village over discovers the truth about Shan Yu being alive and decides to team up with him against the Emperor, things become hectic and Mulan and Shang must bring the armypeople back together to fight against them.