Why can I not go over this man? Hollywood actor Christian Baal is used to action, but this is no movie. We've been stopped. Playing clothes, Chinese security, who would not identify themselves, determined to stop him and our crew, contacting a detained human rights action. What's your question? We're trying to get out of here. Once again, we've been stopped. We've been stopped right here. And as you can see that they're pushing Christian here, we're just trying to leave peacefully. We're trying to leave peacefully. As we leave, the guards give chase in their car. There's still right on our tail. Christian Baal says this is not what he'd hoped for. He'd made an eight-hour car journey from Beijing to try to meet a personal hero, the blind self-taught lawyer Chen Guangcheng. You know, I'm not being brave doing this. The local people who were standing up to the authorities and their assistant on going to visit Chen and his family and getting beaten up for it and understanding his being detained for it and everything. You know, I want to support what they're doing. Baal has been in China for the premier of a film he's made here about the Japanese invasion of Nanjing in the 1930s. Baal could have rolled up the red carpet and left, but the actor whose movie is about suffering and injustice could not leave China without her. Chen Guangcheng has campaigned against alleged forced abortions and the treatment of villagers in China. In 2006, he was sentenced to more than four years in prison for disrupting traffic and damaging property. He denies those allegations. Chen has not been allowed to leave his home since his release last year. Local Chinese authorities in Shandong Province have his house and local village in lockdown. No one allowed him to see Chen. Authorities here declined to comment on the case. The United States has championed Chen's cause. Secretary of State Hillary Clinton has raised his case during past visits to the region. Christian Baal now wants to add whatever weight he can. I mean, this doesn't come naturally to me, but this was just a situation I said. I can't look the other way. Baal has followed CNN's coverage of Chen's case and approached us to try to meet the blind activist. His hopes were high until this. What I really wanted to do was shake them out, say thank you, and tell him what inspiration he is. The Chinese security continued to chase us for more than half an hour. We got away. Chen remains locked in his house. Stan Grant CNN, Chen Dong, China.