Martian language (Chinese: 火星文; pinyin: huǒxīng wén; literally: "Martian script": 吙☆魰) is the nickname of unconventional representation of Chinese characters online. “Martian” describes that which seems strange to local culture. The term was popularised by a line from the 2001 Hong Kong comedy Shaolin Soccer, in which Sing (Stephen Chow) tells Mui (Zhao Wei): "Go back to Mars, the Earth is so dangerous."
In the 2006 General Scholastic Ability Test of Taiwan, students were asked to interpret symbols and phrases written in "Martian language", and the controversies which followed forced the testing center to abandon the practice in future exams.
In 2007, Martian language began to catch on in mainland China. The first adopters of Martian language mainly consisted of Post-90s netizens. They use it in their nicknames, short messages, and chat rooms in order to demonstrate personality differences. Later, they found that their teachers and parents could hardly figure out their new language, which quickly became their secret code to communicate with each other.
The Martian language became so popular in cyberspace that even some pieces of software were created to translate between Chinese and Martian language.
Chinese online bloggers followed up the trend to use Martian language, because they found that their blog posts written in the new language can easily pass Internet censorship engines, which are currently based on text-matching techniques.
The Martian language is written from Chinese by means of various substitution methods. Just like in l33t, where the letter "e" is replaced by the number "3", in Martian, standard Chinese characters are replaced with nonstandard ones, or foreign scripts. For each Chinese character, it may be replaced it with:
- A character that is a homophone
- A character that looks similar
- A character with a similar radical
- A character with the same or similar meaning
- The Latin script, Cyrillic, hiragana, bopomofo, katakana, the IPA, other unicode symbols, SMS language, etc.
For example, the 星 in 火星文 huoxingwen (星 is literally "star"; 火星 is "Planet Mars") can be replaced by "☆", a Unicode symbol that visually represents an actual star. 的 is commonly replaced with の, as it has the same intended meaning in Japanese. 火 can become 吙 just by adding a 口 radical, which alters very little in terms of sound (but changes the meaning), and visually maintains the 火 image. In the same principle, 文 wen, language can be replaced with 魰 by adding a 鱼 fish radical, which makes the character still look similar. Also, 的 is sometimes replaced with "d" due to its sound, as with 比 being replaced with "b"; Cyrillic can be used in a similar manner. Brain-disabled characters are a subtype of Martian: BDC only includes Chinese characters and nothing else, while Martian language incorporates BDC, as well as scripts such as Cyrillic, Hiragana, Bopomofo, SMS, and others.
jiàn yú duì rén lèi jiā tíng suǒ yǒu chéng yuán de yǔ shēng jù lái de zūn yán jí qí píng děng de hé bù yí de quán lì de chéng rèn, nǎi shì shì jiè zì yóu, zhèng yì yǔ hé píng de jī chǔ,
jiàn yú duì rén quán de wú shì hé miè shì yǐ dǎo zhì yě mán bào xíng, zhè xiē bào xíng jī nù le rén lèi de liáng xīn,
jiàn yú duì yī gè rén rén xiǎng yǒu yán lùn hé xìn yǎng zì yóu bìng miǎn yǔ kǒng jù hé kuì fá de shì jiè de pàn wàng, yǐ bèi xuān bù wèi pǔ tōng rén mín de zuì gāo yuàn wàng,
jiàn yú wèi shǐ rén lèi bù zhì pò bù dé yǐ tǐng ér zǒu xiǎn duì bào zhèng hé yā pò jìn xíng fǎn pàn, yǒu bì yào shǐ rén quán shòu fǎ zhì de bǎo hù...
Whereas recognition of the inherent dignity and of the equal and inalienable rights of all members of the human family is the foundation of freedom, justice and peace in the world,
Whereas disregard and contempt for human rights have resulted in barbarous acts which have outraged the conscience of mankind, and the advent of a world in which human beings shall enjoy freedom of speech and belief and freedom from fear and want has been proclaimed as the highest aspiration of the common people,
Whereas it is essential, if man is not to be compelled to have recourse, as a last resort, to rebellion against tyranny and oppression, that human rights should be protected by the rule of law,
Whereas it is essential to promote the development of friendly relations between nations...
- SMS language
- Heavy metal umlaut
- Internet slang
- Education in the Republic of China
- For example, when commenting on the possible blocking of Hotmail, one is quoted as "I can only conclude that the person in charge of this is considering it from a Martian point of view." 
- Martian language banned in Taiwanese college entrance exam
- Exam body agrees to omit 'Martian' from college exam