Yajin is the currency that the survivor bases use for transactions in the post-apocalyptic world. It mainly plays a role in the economic system of human society. The development of human society stems from constant trading, which reflects the importance of an economy!
The Evolution Crystal and Evolution Core in the brains of evolved lifeforms and zombies both contain powerful energy. As they are made up of physical matter, with no DNA or RNA chains. Some imaginative scientists even use Evolution Crystals containing antimatter as a source of energy, creating the first car powered by antimatter.
Because of the peculiarities of antimatter, human technological development leaps several grades ahead, directly reaching the quantum realm. Evolution Crystals are used as "oil packets", propelling the antimatter within and emitting powerful quantum beams.
