A landslide caused a train to derail in southern China on Wednesday, killing at least four people and injuring 50, state media said. Chinese television broadcast video of the crash site, and emergency workers at the site. The official news agency said the train derailed in the pre-dawn hours in Liuzhou city in the Guangxi region. It was headed to Guangdong province from central China's Xiangfan city, the news agency said, citing railway authorities.