Longevity Park

7 days, 7 lectures. Beijing's elderly have gathered to hear sales pitches for care robots, immortality pills and dubious de-ageing tech. Yet one speaker, Nurse Zhong, offers only a story: of Uncle Xiao, the old man she cared for. What follows is a tale of how two fragile humans - one young, one infirm - weathered all life's hardships: together.