Li Wei (R), the 6th generation inheritor in his family of Yellow River Chengni inkstone making, processes an inkstone carving at Hengshan Village of Huagong Township in Mengzhou City, central China's Henan Province, on Dec. 6, 2019. As one of China's famous inkstones, the Yellow River Chengni inkstone was listed in the first batch of Henan provincial intangible cultural heritages in 2007. (Xinhua/Feng Dapeng)