Amidst the towering modern skyscrapers of Hanoi, there lies a contrasting landscape of aging apartment buildings that stand as silent witnesses to the passage of time. On one side are luxurious, fully-equipped condominiums, while on the other, lie damp stairwells and a maze of illegally constructed "cage homes," where multiple generations of families reside within the confines of a single unit, creating a unique and vibrant community.