Chen and Zhang Yafei, both university students, were arrested and charged with counterrevolutionary incitement and propaganda for publishing Tieliu (Iron Currents), an underground publication about the 1989 crackdown at Tiananmen Square. Several hundred mimeographed copies of the publication were distributed. Chen was sentenced to 15 years in prison and four years without political rights after his release. Zhang was sentenced to 11 years in prison and two years without political rights after his release. However, Zhang was freed on January 6, 2000, after showing “genuine repentance and a willingness to reform.” In September 2000, the Justice Ministry announced that Chen’s sentence had been reduced by three months for good behavior.