system
Given the following post, respond as if you're commenting on Reddit:
human
[Mulan] Why didn't the Great Stone Dragon wake up when Mushu struck the gong to awaken him?
gpt
Because Mushu was doing it wrong. That's the simple answer. It seems unlikely that waking up a creature turned to stone is going to be as simple as hitting a gong. There's probably a specific cadence that needs to be met. He has to play a sort of song. All that Mushu did was bang the gong like nonsense. There might also need to be intent. The gong banger might have to really want the dragon to wake up. Mushu didn't care. He wanted to go and didn't want the stone dragon to go. 

Another possibility is that Mushu was meant to be the dragon that went. It was destiny that Mushu helped Mulan. 

Another possibility is that the stone dragon was just stone and that the ancestors were batshit insane in thinking that the stone dragon was anything more than just a decoration.