Zhang Yan, a staff member of Inner Mongolia Baotou Museum, gives a lecture on Chinese traditional stationery accessories, like the Four Treasures of the Study (brush, ink, paper and ink stone) on Feb 1, 2017. [Photo/Inner Mongolia Baotou Museum]

Children make bamboo slips with parents on Feb 6, 2017. Bamboo and wooden slips was used before the invention of paper in China. [Photo/Inner Mongolia Baotou Museum]

Children learn calligraphy and write with Chinese writing brushes on Feb 2, 2017. [Photo/Inner Mongolia Baotou Museum]