The Scholar of the Jade Hairpin

After a thousand years of cultivation, Liu Ruyan came down from the mountain for the first time and fell into the hands of the mortal scholar Zeng Xingshu. The scholar traded her a jade hairpin for ten years of her companionship, claiming it was an ancestral token of betrothal. Looking at his handsome, gentle profile, she thought ten years would pass in the blink of an eye, so she might as well indulge him. Until one day, she discovered the jade hairpin was an ancient immortal artifact, one that specifically countered snake demons. And Zeng Xingshu seemed to carry a faint trace of dragon blood..