From Wikipedia, the free encyclopedia Ronald Winston Yuan is an American actor, martial artist, director, and stunt choreographer. He is best known for his roles on Sons of Anarchy, Prison Break, Golden Boy, and CSI: NY. He has acted in numerous films, including an ensemble lead as Sgt. Qiang in Disney's live-action adaptation Mulan. He also supplied the voice of Sgt. Fideltin Rusk in the video ...