Rumor had it the land outside was contaminated, making it impossible for crops to grow. It required the combined efforts of Plant, Earth, and Water Element superpower users, but why would the high-and-mighty superpower users deign to solve the problem of feeding the common people? They were unwilling to do such menial labor. Besides, it took a tremendous amount of effort to produce edible food from the contaminated soil and plants. When they craved something, simply accelerating the growth of a few fruits was enough for them.
Later, it was Bai Jiao who opened up trade routes for some vegetables, fruits, and grains, exchanging them for Spirit Cores from other bases. Only then were the superpower users able to eat a little better.
