An Empress And The Warriors is Kelly Chen's first martial arts film. In one scene, it described her and Leon going to collect honey together. While filming this scene, real bees were set out. Fortunately, there was a beekeeper looking over the site.
Kelly said, "To film this scene, we didn't dare to use fragrant shampoo and perfume, because the bees will follow the smell. The scene was about me making the beehive fall. Leon and I used our clothes to shield and escape. As soon as I saw a bee flying nearby, I became frightened and immediately ran off. I ran faster than Leon." Later, Leon consoled her and told her not be afraid, because he'll protect her.
Kelly joked that Leon has a nickname called Dr. Lai. She said, "Whatever medicine you want, Leon will definitely have it. I once had sensitive skin and also used Leon's medicine. But when he was injured, he didn't bring painkillers!"