A lawyer for Huang Zerong, who uses the pen name Tie Liu, said his client was also fined USD 5,000. The lawyer, Liu Xiaoyuan, said Huang denied running an illegal business, a charge that was related to a self-published magazine Huang distributed for free.
A vague charge of causing trouble lodged at the time of Huang's detention in September was dropped before the trial.
Huang was taken from his Beijing home after publishing articles criticizing propaganda chief Liu Yunshan, a member of the ruling Communist Party's all-powerful Politburo Standing Committee, for tightening controls over the news media.
His magazine, Small Scars from the Past, also published articles chronicling the experiences of people persecuted during party political campaigns.
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Huang is one of the oldest dissidents to be formally charged. His history as a critic of the party dates from the 1950s, when he was labeled a "rightist" under the founder of the Communist state, Mao Zedong, and was sentenced to 23 years in a labor camp.
Calls to the court in the southwestern city of Chengdu, where the trial had been moved from Beijing, rang unanswered. Huang's wife, Ren Hengfang, said she was too distraught to comment.
Liu was not at the trial, and Huang was represented instead by a court-appointed lawyer. That, and the lightness of the sentence, appeared to indicate the authorities wanted to wrap up the matter quickly and quietly by expediting the proceedings.
"The charges didn't stand up and the court lacked jurisdiction," Liu said.