He from the Underworld

Five hundred years ago, she jumped off a cliff because of some strange combination of circumstances, and he pursued her all the way to the City of Fushun in the underworld. I thought I would guard it silently for five hundred years, and it would just go on like this. Who would have thought that she would suddenly come to the earth to renew her unfinished love. The information was wrong and she found the wrong person. Fortunately, he also followed him to the underworld and continued to protect...