Xie Xu and his friend, Zhang Chi, made headlines around the world after their amazing story caught the attention of reporters. For three years, Xie has carried Zhang to school piggyback-style. Zhang suffers from a condition called muscular dystrophy. The condition weakens muscle, making it impossible for the person to walk or support their own weight. The boys live in a dorm near their school. Besides carrying him to and around school, Xie also helps Zhang cook meals and wash his clothes.