Truth not allowed in China

China has internet blacklist By Richard Spencer

Chinese computer hackers have discovered a list of officially banned words and topics, casting new light on the shadowy world of the country's 30,000 internet police...

Some topics were predictable: human rights, democracy and phrases used to describe the Tiananmen Square massacre.

But others showed the full sensitivity of the authorities, The list included the name of President Hu Jintao and the words liberty, Christian, truth, sex and brassiere.

Here's a similar list: Hu Jintao 胡锦涛、democracy 民主、liberty 自由、Christian 基督教、truth 真理、sex 性、brassiere 奶罩、June 4th 六四、human rights 人权、and Jiang Zemin's personal favorite, Falungong 法轮功。

I suppose the 性 that's disallowed is 性 as a single word, for as Lin Yutang's dictionary points out, 性 is

1. the equivalent of -ness, -ity for expressing abstract notions: 可能性 possibility, from 可能 possible, etc.
   
2. Nature, inborn nature: 天命之謂性，率性之謂道，修道之謂教 (中庸) "What is God-given is called nature; to follow that nature is called the way; to cultivate the way is called culture",
   
3. What is instinctive, inherent...天性，本性 man's inborn nature, also original nature of man.
   
4. Sex, sexual desire or impulse: 兩性 the two sexes
   
5. Gender: 陰性，陽性，中性 feminine, masculine, neuter gender
   
6. Personal temperament, character, personality: 性情
   

It's not until (4) that we get to sex.