(Chief Executive Jerry Yang) and Google in the United States for censorship of Chinese material for unjustified reasons.

[1] Guo's very public open letters to President Hu Jintao demanding multi-party elections and the depoliticisation of the People's Liberation Army, were widely published in the internet blogosphere as well as the traditional media.

[4] The PEN American Center wrote: Writer and former professor of literature at Nanjing Normal University, detained November 13, 2008 on “suspicion of subverting state authority.” The reason for his arrest is not yet known, but is believed to be related to his writings.

He had been detained for ten days in May 2008 following seven articles he published on mainland Chinese web sites that criticize the government’s emergency response to the May 12, 2008 Sichuan earthquake and the safety of certain infrastructures.

On 20 December 2022, he was sentenced to a further four years in jail for "incitement to subvert state power", the charges stemming from his criticism of officials during the early stages of the COVID-19 pandemic.