The upper part (file) of this combo photo taken by Duan Wenhua shows employees working at a clothing factory in Shenzhen, south China's Guangdong Province. The lower part of the combo photo taken by Mao Siqian on March 28, 2015 shows fashion designer Lu Yu (R) at her studio 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)