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After scratching his head for a bit, pondering what that white thing (paper) was, he put it on his horn and flew to his destination.
At the gate stood a guard.
- I... want to pass. You understand, dragon-style? P-r-o-y-t-i...
The guard's eyes:
Dragons have become completely brazen! They fly right up to the gates and start shouting! Sound the alarm! There's a dragon at the city gates!