Global Desert, My Portable Oasis Can Be Upgraded

[Slow pace + National time travel + Doomsday + Superpower + System + Farming] Just after the university military training ended, Lin Yu and more than 80 classmates were trapped in the desert by a sandstorm. Roads disappeared, cities were swallowed by yellow sand, and all communications were interrupted. Everyone thought that they could be rescued as long as they rushed to the visitor center. It was not until the first strange beast emerged from under the sand that they understood that it was not the scenic spot that had changed, but the entire world. Some people were awakened and strengthened, some gained supernatural powers, and deep in Lin Yu's consciousness, a portable oasis of only nine square meters appeared. The spring never dries up, but only three liters of water can flow out per hour; the oasis is inaccessible and cannot accommodate living creatures. To make it expand, he must search for dry water veins in the endless desert. While others were still waiting for rescue and scrambling for supplies, Lin Yu had already begun formulating rations, hunting exotic beasts, recruiting teammates, and building strongholds. From a small spring to the first oasis city in the sea of ​​sand. And he soon discovered that it was not only deserts and alien beasts that came to the earth, but also humans from another world.