Cao is a famous calligrapher in China, and all his calligraphy works on display are true. Cao is good at regular script and running script, and his works are famous for their unique style and exquisite skills. In class, Cao often shares his calligraphy creation process and works display. These videos were recorded and released by himself. In addition, Cao's calligraphy works have been widely recognized and displayed in other media and exhibitions. Therefore, it can be confirmed that Cao Linshu's calligraphy on Tik Tok is true.