Seeing Wang Xiaoqiang approaching, the Xu family father and daughter were taken aback—they certainly didn't believe Wang Xiaoqiang could cure diseases. Furthermore, Xu's mother had rheumatic heart disease, a condition caused by the invasion of pathogenic cold and damp into the body, affecting the heart, and generally difficult to treat. There was hardly any chance of a complete cure, especially for a chronic patient like Xu's mother, who was merely clinging to life.