Return to the City After Doomsday

In 2022, Chen Yang suddenly traveled to the doomsday world of 2091. The countdown that appeared on his palm awakened the city return system, and the two worlds crossed each other every 12 hours! The earth has experienced a catastrophe and returned to the wilderness. The remaining humans are scattered all over the place and face various dangers: zombies, viruses, environment, crises... How will humanity survive and restore civilization? Is there a bigger conspiracy behind all this? The Qiankun Warehouse can store supplies. What should I bring back this time? Antibiotics? Seeds? Generator? Ten ak?… No one wants diamonds or gold here? Then I'll take some back to exchange for funds...