Go.

A man in a dark jacket and white t-shirt walks along a canal under a bridge, carrying a backpack and a red object, then turns and walks away from the camera. The scene cuts to a close-up of a black mobile phone with a white cable plugged in, resting on a wooden surface, then to a blurry view of a classroom with students at desks. The man reappears, walking along the canal, and then turns and walks away from the camera under the bridge.