The video features a man standing in front of a chalkboard. He is wearing a brown suit, a red tie, and a gold chain necklace. He is holding a piece of paper in his hand. The chalkboard behind him has various mathematical equations and diagrams drawn on it. The man is speaking, and the video shows him writing on the chalkboard with chalk. The words \"2 CHAIR\" are written on the board, and he continues to write until the full phrase \"2 CHAIR EXPLAIN\" is visible. The man appears to be giving a presentation or lecture, possibly related to the content on the chalkboard.