A visiting student tries to make a Chinese knot in Ge Enguang's studio in Chang'an District of Shijiazhuang, capital of north China's Hebei Province, Nov. 24, 2018. Guo, an inheritor of the knotting technique, is now giving lessons to the next generation to pass on the over 20 techniques she accumulated since her childhood. (Xinhua/Zhang Xiaofeng)