Since 2099, disasters have come, natural disasters, mutations in plants and animals have made human life difficult. When disasters come, some strange buildings suddenly appear all over the world - Doomsday Banks. Doomsday Banks do not accept gold or silver, but only the crystal nuclei of mutated plants and animals. In Doomsday Banks, you can exchange for all survival resources, food, medicine and other resources for human survival.
Qin Guan: I am just an ordinary mutation researcher, and sometimes work part-time as a negotiator;
Staff 002: The price is clearly marked, one high-grade crystal core is exchanged for 50 tons of grain;
Qin Guan: 100 tons, one high-grade crystal core 100 tons of grain;
Staff 001: It is said that it takes 10 high-grade crystal nuclei to replace the blocking fluid;
Qin Guan: Can I get a loan? Isn't this a bank?
Staff 001:......
Purpose: Let the world return to its original state