Ever since substitute food appeared during the natural disaster, it had become the most commonly consumed item by the lower-tier survivors.
Substitute food was actually made from a variety of broken grains mixed with edible plant fibers like straw corn cores, which were then dried, crushed, and compressed into something resembling grain bricks.
In fact, substitute food was invented during the flood disaster, but after the flood ended and Pengcheng's food supplies gradually met the survivors' needs, these grain bricks disappeared.
Even the common grain bricks were basically made from a mixture of coarse grains and corn cores.
Initially, when ancient creatures had not appeared, many were hesitant about becoming Martial Artists. After all, to become a Martial Artist, besides having a cultivation manual, the most important thing was the need to consume a large amount of food every day.