If you really think about it, the story really changed nothing. Dragons are still rare, and humans are still probably slaughtering the few remaining ones. However, their rarity could really just be because they're in hiding.
Knowing that the stone is actually Danzi's egg (in case you haven't figured it out by the end) puts the whole perspective of the first book into a new light.
Could it be that in "Dragon Moon", the necromancer found Ping because she told Jiang Bing she and Danzi were going to the Ocean in the previous book? It seems likely, given the necromancer could've summoned Jiang Bing's spirit after she drowned.
