A folk artist teaches children to make lantern during the 4th China (Weifang) folk art fair in Weifang, east China's Shandong Province, April 19, 2019. The 4th China (Weifang) folk art fair kicked off here on Friday. More than 50 categories of folk art were displayed and visitors could have a try at the interactive exhibition area. (Xinhua/Guo Xulei)