Prepare a five-minute calligraphy class for primary school students. What should I talk about?

From Xia, Shang and Zhou Dynasties, through the Spring and Autumn Period and the Warring States Period, to Qin and Han Dynasties, the historical development of more than 2,000 years also promoted the development of calligraphy. China's unique calligraphy tool, namely Four Treasures of the Study. The names of pen, ink, paper and inkstone originated in the Southern and Northern Dynasties. Calligraphy includes Oracle Bone Inscriptions, inscriptions on bronze and stone carvings. Among them, seal script, official script, cursive script, running script, regular script and other fonts were stereotyped in the screening and elimination of hundreds of miscellaneous characters, and calligraphy art began its process. The most influential calligrapher in the history of calligraphy is Wang Xizhi. Wang Xizhi's running script "Preface to the Lanting Pavilion" is known as "the best running script in the world", and critics say that his writing style is like floating clouds and smart.