The next morning Lin Hao is in a hurry on the stairs. He is looking at his English book, not at the steps. He bumps into a classmate, and the boy's water bottle falls and rolls. Water runs down the stairs like a small river.
"I'm sorry," Lin Hao says quickly, and his ears turn red. He picks up the bottle and wipes the floor with tissues from his bag. The boy looks up and sees that it was a mistake, not a joke. "That's okay," he says. "It was an accident."
They walk to class together, a little wet, a little quiet. At the door Lin Hao says again, "I'll be more careful." The boy smiles. "Me too. I run on the stairs sometimes." A small sorry can keep a friendship from breaking.
In English class they read a text about a girl who moved to a big city and missed her friends. Lin Hao thinks about the bottle on the stairs. Friends are not only for games. They are also for the clumsy minutes. He writes in his notebook: I'm sorry. That's okay.