The incident caught on CCTV shows a woman Xiang Liujuan, 30, holding her son as they travel up an escalator, but as the woman steps off the escalator, the floor gives in and she is swallowed by the escalator. As she fell half-way through, she pushed her son forward, and a nearby shop assistant dragged him to safety. The escalatorcontinued rolling, and several seconds later she is seen disappearing into themechanism, even as one of the staff tried grabbing her hand. It took firefighters more than four hours to cut open the machine and recover the woman.