The video game World of Warcraft has a prop called blood therapy jewelry. In the video game World of Warcraft, jewelry is a kind of gem, which can be embedded in equipment to enhance the character's attributes and abilities. Blood therapy jewelry has the effect of providing additional life recovery, allowing the character to recover life faster in the battle, increasing the viability and the ability to fight for a long time. The specific attributes and effects of blood therapy jewelry in World of Warcraft will be different according to the game version, jewelry quality and other factors. Players can improve their fighting ability by completing tasks, defeating monsters or getting jewels from other players and embedding them in slots of equipment.