"Cherishing Spring" meets your requirements. The female protagonist has a peach blossom seal on her palm that can seep out a few drops of spiritual liquid to detoxify and strengthen her body. When she first transmigrated, the original owner was tricked into killing the male protagonist, and the female protagonist had to stand up and protect the male protagonist. In the later plot, she fell in love with the male protagonist. I recommend this novel to you. I hope you like it. Muah ~