The blurb:
❝Because of the road sweeper's belief in him, a dragon saves the city of Wu from the Wild Horsemen of the north.❞
That is flatly wrong.
What the road sweeper actually says to the old man who claims to be a dragon (but nobody believes him) is:
❝I don’t know whether you are a dragon or not, but if you are hungry and thirsty, please do me the honor of coming into my humble home.❞
The dragon saves the city not because of the road sweeper’s •belief•, but because of his •kindness•.