China. World's biggest health care system goes under the knife.SHENZHEN, CHINA—In most Chinese hospitals, teeming waiting rooms and forlorn patients wheeling intravenous drips through dingy, ill-lit halls are troubling but typical sights. University of Hong Kong (HKU)-Shenzhen Hospital, however, is anything but typical. Its gleaming wards and labs, opened to outpatients last July, are at the vanguard of China's health care reforms.