A bicycle bounces over a rough road in winter gloom, carrying a young father, Huang, and his child to the primary school in the village. The guard Li greets them “Lai Lie” and Huang watches with pleasure as children chase each other around the yard. Twenty Years later, Huang returns, but the school is now a nursing home; Li is still there, greeting them the same way, but this, just like the world they live in, the nuance of the greeting has changed