Tomb Raiding: A Sixty-Year-Old Granny Storms The Grave Robbers' Chronicles

Granny Zhang was already in her seventies and had made peace with the fact that she was about to die. She never expected that some main System would recruit her to work. What a raw deal. But after the main System told her she could use the money she earned in another world to support her darling girl, Granny Zhang decided the task might be worth doing after all.