Li Xiyang, the 7th generation inheritor in his family of Yellow River Chengni inkstone making, searches for mud to make inkstones on the beach of Yellow River in Huagong Township of 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)