However, he couldn't let the servants and secret guards discover his plan. Besides, he was still so young, so how could he find the key to the corner door?
In the end, Little Bear found a way—the master key.
As there were people of all classes among his friends, he knew that some thieves could magically open many locks with a wire. These people also liked to make a key that could open many kinds of locks.
Little Bear went to a friend and, through his connections, managed to get his hands on such a key. He had tried it on his door, and the key really could open the corner door. So, he excitedly sent Little Treasure a bunch of toys, hiding the key among those toys.