The golden blood of the mermaid is one of the seven beauties. It can resurrect the dead and heal the seriously ill. Ordinary people can live forever and stay young after drinking it. Those who have the ability to read can greatly increase their power. The golden blood of the mermaid cannot be reborn, and what is regenerated from the bone marrow is just ordinary blood. Therefore, mermaids have always been hunted by humans, and their numbers have always been very small. More than ten years ago, a massacre almost wiped out the mermaids. Only the brother and sister Ocean Heart escaped to Pearl Bay under the protection of the royal guards. . . . . . .