Customers learn the technique of movable-type printing at a printing workshop in Qingdao, East China's Shandong province, June 21, 2017. Custormers can learn the movable-type printing, one of the world's oldest printing techniques invented in China, in the workshop, which was established in Qingdao in 2013 and has 40 branches all over the country. [Photo/Xinhua]