If the blood really encountered a serious problem, then blood transfusion would be the first choice. However, even after the transfusion, the problem could still proliferate continuously, and even medications couldn't suppress it. There's another method that's quite extreme, which is to fight poison with poison.
According to the Medical Saint Masters existing within the Murong Worldly Family, some of them possessed exceptionally superb medical skills. Yet they still failed to resolve the issue; indeed, obtaining a Hundred-Year Snow Lotus and a Thousand-Year Snow Lotus was no easy feat.
Otherwise, the Hundred-Year Snow Lotus might be negotiable, but for the Murong Family to part with a Thousand-Year Snow Lotus, it would be incredibly painful. It was only out of sheer desperation that they would resort to such measures.