According to the information you provided, I recommend the book "Blood Stained in Ice". It is a traditional wuxia novel with the word "blood" in the title, which meets your requirements. The novel described how the hero Nangong Shaoyou helped the Song Dynasty kill enemies in his early years. His hands were stained with blood. After he left the army, he roamed the Jianghu. He was heroic. Three feet of ice swept away the demons. His pair of fleshy palms intimidated the evil. He was a child's love. He was a childhood sweetheart and a beautiful woman. How could a hero not be short of breath? The plot was traditional, and he paid tribute to Master Jin Yong. I hope you like my recommendation. Muah ~