My Check-In System Keeps Giving Me Meat in 1960s China

She transmigrated to 1960s China with the most unexpected golden finger—a check-in system that rewards her with pork belly, luxury goods, and impossible treasures in an era of scarcity. While everyone else struggles through rationing, she's building a secret empire one daily sign-in at a time. But when her soldier brother returns home after years away, he can't believe his eyes: their once-poor family now lives like royalty. How will she explain her way out of this?