Folk artist Ren Gengshun shows an engraving he made with electric soldering iron in Zhengzhou, Central China's Henan province, Dec 9,2014. Ren has been practicing pyrography for 30 years with heated iron on wood, silk and other materials. As the officially recognized successor of this intangible cultural heritage, he has created poetic fairylands, illusory clouds and vivid characters of his own artistic style. His works have been collected by people from other countries, such as Canada, Japan, Germany, and Portugal. [Photo/China News Service]