Miami's urban areas are mixed of old and new buildings with mottled exterior walls, high-rise buildings and Daxing Civil Works. Because they go in the daytime, they don't see the bad security at night. But the smell of urine in the dark corner reminds me that homeless still exists here. It is worth mentioning that as a tourist, Miami's free public transport is very convenient, free light rail + trolley can basically meet the needs of urban travel.