Disney Dreamlight Valley's Lucky Dragon update opens up a whole new Mulan-themed realm to explore with various quests to complete. While these quests give you many different items, perhaps one of the trickiest to get is Mulan's Key. When you progress through the Mulan Realm in Disney Dreamlight Valley, you might find yourself scratching your head and wondering where to find Mulan's Key as an objective near the end of one particular quest from this Realm. The objective asks you to search the Realm for a key to unlock Mulan's storage chest. However, this is a pretty large area to search, especially when compared to other realms in the game.