Global Catastrophe: Get a 1000-acre survival base at the start

Disasters strike, alien beasts are born, and human beings live on porridge.
　　Su Yuan was lucky to activate the survival base system, harvest millions of catties of grain every day, exchange one grain for ten resources, and upgrade the survival base crazily.
　　Ding, upgrade the survival base to level 1 and get a disaster early warning machine, so the equipment can be upgraded once for free!
　　Warning, a wave of alien beasts will break out in 4 days, please prepare in advance!
　　Warning, meteorite rain will come in 18 days, please prepare in advance!
　　Warning, after 26 days the super cold snap will come, please do not leave the survival base...
　　Ding, upgrade the survival base to level 2, get...

Main characters: Su Yuan, Su Su,

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