Lan Haoyan stood at the entrance of the "Guanlan International" community, dragging a washed camouflage suitcase that turned white, and frowned slightly. He rented this community. The rent was not cheap, but it was quiet and not far from the city center. It suited his desire to live a low-key life after retiring. But as soon as I arrived at the door today, I was stopped by a property manager wearing a black suit and white gloves.