No need for testing; Wang Zhifan was very sure that the humans of this world could definitely provide him with faith power, and the quality was likely higher than that of his two maids, Yi Lin and Yali, who were magical creatures, after all, they were living, highly intelligent humans, and exceptional ones from the Mystical World at that.
However, turning such a massive human resource into his own use was a huge challenge. Getting a free-spirited person to have faith in him would not be an easy task, as they had no spiritual connection with him and no loyalty either.
"This idea seems to have potential feasibility... just that the implementation would undoubtedly be very difficult, and it would certainly be time-consuming and labor-intensive..."
