Kai-Fu Lee, former president of Google China, published a chart on Twitter showing how often his micro-blog was deleted by the Chinese government's censorship arm. Lee regularly blogs about cultural and technology issues in China on Sina Weibo, the most influential micro-blogging platform in the country.

The Chinese government regularly censors content it deems unacceptable. If you want to know more about how the censorship mechanism works with Chinese social media, you can read Global Voices Advocacy's recent article on Sina Weibo Censorship.

Below is Lee's chart and an explanation of the sensitive terms that caused his posts to be deleted.

Kai-Fu Lee's chart on Sina Weibo deletion.

July 29 – August 5 2012: 6 posts deleted
Sensitive terms:
Qidong incident（啟東事件）: A mass rally in Jiangsu province. Thousands of citizens from Qidong occupied the city government building to protest against the construction of wastewater disposal facilities.
Internet freedom（網絡自由）
Gu Kailai（谷開來), wife of Bo Xilai. She was formally charged with murdering an English businessman in July 2012.

September 10 – September 16: 8 posts deleted
Sensitive terms:
Rational protest（理性抗議）
Xi'an Japanese car owner incident (西安砸車): During the anti-Japanese protests in Xi'an city, a Japanese car owner was attacked by a protester and severely wounded.

November 5 – November 11: 6 posts deleted
Sensitive terms:
The 18th National Congress of the Communist Party of China（十八大）
Reform（改革）

January 7 – January 13: 7 posts deleted
Sensitive terms:
Southern Weekend's official micro-blog（南周官微): during the Southern Weekend incident, the administrator of the paper's official Weibo account was forced to hand over the password to the chief editor.

March 4 to March 10: 10 posts deleted
Sensitive terms:
Lianghui（兩會): the annual meeting of the National People's Congress and Chinese People's Political Consultative Conference.

March 11 to March 17: 10 posts deleted
Sensitive terms:
Pigs in Shanghai (豬投上海): Thousands of dead pigs were found floating in a Shanghai river
Lianghui（兩會)