Andy On Chi Kit and Donnie Yen Chi Tan in THE LOST BLADESMAN (GUAN WON CHEUNG) had major scenes of crossing five passes and slaying six generals. He held nothing back as he fought until he was all battered and bruised. With the strongest in the universe Lord Don in sight he was merciless. Afterward even his girlfriend Jennifer Tse Ting Fung's heart ached upon learning how crazy he was.
In one scene they fought in a narrow corridor. In the midst of their fight, they still carefully minded their horses around them. Trying to avoid injuries, the degree of difficulty was extremely high. Finally On Chi Kit in order to protect a horse in the narrow corridor bruised his arms on the walls around him. Reportedly Ting Ting understood that her boyfriend would be fully involved in every action scene, which often worried her. Speaking of this narrow corridor scene, On Chi Kit said that it was an exciting performance. He said, "This scene took over ten days, the most difficult of which was accommodate the horses that we were trapped with us in the narrow corridor; because horses were easily spooked, when Lord Don and I fought, we often had to spin and couldn't take another step. We had to be careful so the horses didn't harm us. Thus everyday the shoot took a long time."
As for working with Yen Chi Tan for the first time, On Chi Kit said that he was somewhat worried at first. He said, "I earlier often heard people describing Lord Don with the strongest in the universe, which left me somewhat frightened. However after one or two days at work we became very familiar very quickly. He not only was not arrogant but took great care of me." Chi Tan also had nothing but praise for On Chi Kit and even said that he could be a successor in a new generation action film.