On the day the zombie horde broke out, Jiang Le was sitting back with his legs crossed, collecting rent. While everyone else stockpiled canned food and scrambled for gear, he quietly opened his phone's front-facing camera. In the office towers where the whole city had fallen, trapped white-collar workers were frantically scanning codes to renew their leases. No water or power? He'd build a micro nuclear power plant. A horde surrounding the building? How about eighteen security doors downstairs? While the major survivor bases were still fighting over half a box of instant noodles, Jiang Le had already used his rental income to assemble a drone security force. He'd also turned the whole building into an ironclad apocalypse fortress with his security system. Until one day, a well-equipped military squad smashed open the entrance. The captain stared at the tenant register filling the room, his pupils trembling. "So you've been supporting three thousand people with rent for the past six months?" Jiang Le leisurely jangled the bunch of keys in his hand. "To be precise, three thousand and one. The new tenant should pay six months' rent upfront. We accept QR code payments."