Lee Wing Mui Anne checks her email on her way to Shenzhen, south China, June 21, 2017. Lee, a doctor from China's Hong Kong, is currently the chief of the clinical oncology center at the hospital. Invited by the University of Hong Kong, Lee started her work at the hospital in October, 2012. During the past five years, she traveled from Hong Kong to Shenzhen two days a week, providing medical services and participating in management work to enhance the cooperation and communication between doctors and medical staff of the two cities. By far, a total of more than 100 doctors from Hong Kong have been registered in the University of Hong Kong-Shenzhen Hospital, and some 40 doctors travel between the two cities everyday.(Xinhua/Qin Qing)