"The Sammo Hung Action Collection"

Yuen Biao followed me for a long time being a stuntman, doing a lot of double for other people, and then in "The Prodigal Son" he played Liang Zan. He was very young but very very good. When we were young we studied at the Peking Opera School. I know what he is good at. He is like a little brother to me. He is good at everything. He feels no pressure, whatever you tell him to do, he can do it. Jump, fight, everything.

"Eastern Condors" HKL Interview

Yuen Biao was very little at that time, we were a little bit bigger. Jackie Chan and me were always arguing. Later in the school I was in charge for everything, I could beat everybody. My master trained me, and then I wanted to train them. If they did something wrong, my master beat me. I was scared that master would beat me so I beat them. The relationship with Jackie Chan and Yuen Biao... out of all the people they really understand what's a real relationship. We are even closer than real brothers because we lived together, my master beat us together, and we had arguments. Our relationship is very deep, we have a lot of memories together, like when we slept on the floor, 7 years in theres, performed on stage and in normal life we were fighting on the streets together. So many memories...

The relationship between Jackie, Yuen Biao and myself is not easy to define. For all those years we trained together, we ate together, lived together, even bled together. Today we're always apart but the bond between us remains very strong indeed. I think for people who haven't had this kind of upbringing it's very hard to understand it.