Students experience handicraft of making blue calico in China's Nantong (7)

A college student experiences adding oil, one of the procedures in making blue calico, at the Blue Calico Museum in Nantong, east China's Jiangsu Province, July 15, 2015. College students came to the Blue Calico Museum to experience the handicraft of making blue calico during their summer holidays. (Xinhua/Huang Zhe)