"There were fundamental differences between ruling my imprisonment 'improper' or 'illegal'. This has a direct bearing on my innocence and social justice," according to Ren.
The former prisoner also lashed out at the "re-education through labor" system.
"The system is against the rule of law and is too arbitrary," he said. "The re-education through labor committee can independently deprive people of their personal freedom and there are no specific rules on how long the freedom can be denied. This kind of law enforcement is too horrible."
Ren's case has sparked outcry from netizens as well as law experts.
"Ren Jianyu is now freed. But there is still no specific explanation on his earlier loss of freedom," said a microblogger under the name of "Tutu" on popular Twitter-like service Weibo.com.
Chen Zhonglin, dean of the law school at Chongqing University, said the key to reforming the re-education system is to place the procedure and the re-education approval rights in the hands of an independent agency with the police authorities.
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