Party member Yu's artistic signature can be cursive, regular script and official script, and the atmosphere is beautiful at all. Artistic signature, also known as "signature design", is the beautification and artistry of names. It is not an invention of modern people, it has existed since ancient times, and our predecessors called it "China gambling". Similar to Fahrenheit pledge, there are other appellations such as Fahrenheit pledge, Qian's pledge, signature, signature and agency pledge. These appellations have similar meanings and have the functions of expressing recognition, responsibility and trust, so they become vague and often mixed.