Mars language (mars language: Yan _ _), an interesting character that people on earth can't understand, [1] is composed of symbols, traditional Chinese characters, Japanese, Korean, obscure characters or parts of Chinese characters. With the popularity of the Internet, young netizens began to use homophones, homophones and special symbols to express their voices. Because this kind of writing is obviously different from the writing used in daily life and its grammar is quite strange, it is also called Martian writing, which means the writing that people on earth can't understand.