This dramatic video shows the moment a brave teacher saved a young schoolboy when he was choking on a pen cap in the middle of class at the Paijun Primary School in southwest China's Zunyi city. The boy was reportedly solving a math problem at his desk when he inadvertently swallowed a pen cap. The female teacher, identified as Liu Xianghong, rushed to the student's seat and sprang into action, performing the Heimlich maneuver until he spat out the cap.