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"How much time is left for us?" the old man asked slowly.
"Up to 60 years, if we can't leave the sun's helium flash explosion within 60 years, the entire Earth civilization will be completely destroyed!" Chief Engineer Zhang said in a trembling voice.
He Xie couldn't help but raise his eyebrows in surprise. It is now 2014, which means that the solar helium flash will erupt in 2074, which is at least several decades earlier than th ...
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