I've found this short interview and demo video of Chen Zhenglei:

http://www.youtube.com/watch?v=1eSqUCQPMks

The first part of the demo looks like Er Lu, but I'm not sure. The second demo is the sword form, and in the middle, he talks and demonstrate fajin.

I wish I could speak Chinese so I could get a better idea of what he is saying about fajin. What I find amazing (and a good lesson ) is that he stays incredibly relaxed, and his breathing is still calm.

I'll try to see if I can capture the video and play it in slow motion, looks like a good course on body mechanics!

I saw this video about year ago and asked Jesse to translate me. He is what he wrote me: "He is talking about Chen Tai Chi's fajin and soft. All the hard fajin comes from soft training and the whole body as one unit"