The upper part (file) of this combo photo taken by Yang Shaoming shows people selecting goods at a shopping street in Shenzhen, south China's Guangdong Province. The lower part of the combo photo taken by Mao Siqian on Dec. 7, 2015 shows customers buying food at the CTFHOKO shopping mall in Shenzhen. This year marks the 40th anniversary of China's reform and opening-up policy. Over the past four decades, Shenzhen has developed from a small fishing village to a metropolis. (Xinhua)