C431 Drug Primer and Heart Blood

"This medicinal catalyst needs the blood in the heart of the one she loves and the blood in her heart …" Xiao Zheng smiled bitterly and said awkwardly, "And this method can only be used once. If it is used wrongly, there will be no way to solve it in the future."

"That's not simple. This subordinate will go back and ask the little miss, who is the one whom she loves?" When Qing Song heard this