Newbie writing, updated from time to time
A virus sweeps the earth, leaving only one-third of the world's human population surviving.
The remaining personnel began to build a safe city. It had just settled down, but the number of personnel continued to decrease.
People hiding in the dark are quietly growing.
Cang Lan was ordered to rescue these people, but lost contact along the way.
Where should Canglan go?
Purpose: Live hard