Infinite Strengthening in the End of the World

"Do you want to spend 10,000 soul stones to evolve the '+15 white weapon 'Ordinary Slingshot' into the golden weapon 'Dragon Heavy Cannon'?" "Do you want to spend 100,000 soul stones to evolve the '+15 large domestic truck' into the golden vehicle 'heavy base vehicle'?" "Should we spend 10 million soul stones to evolve the '+15 seven-story apartment building' into a 'steel fortress'?" Standing on the top of the building, looking down at the land where loss was rampant, monsters were raging, and strangers were fighting for hegemony, Xu Si smiled slightly. "With a strong physical body and great cultivation, what's so great about it?" "In front of my 15-strong magical outfit, it's not worth mentioning at all!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.