C214 Raise Strength
He said and did, the reason why the villagers changed was because they drank the Strength of Qi and Blood which contained the dissipation of Dragon Clan.
As long as they could provide them with a steady stream of Strength of Qi and Blood, then, theoretically speaking, these villagers would be able to keep improving.
To others, the cultivation of the Strength of Qi and Blood was extremely rare