Here are two clips that I practice Wing Chun with Guthrie, he is an expert of Wing Chun, has been practice different kind of martial arts since high school.
Thanks for his generous to share his knowlegde with me.

In these videos, we were doing "stick hand", which indeed has so many similarities with Tai Chi's free style push hand, like how to lead the oponent to open his space to create weak spot and filling up the space that was shown to the oponent. Each kind of martial art has it's language to deal with the attack, it is very interesting to learn about this.