@liztai I agree with you entirely. The extremely high ratings make zero sense. It is a good drama, nicely done, and remarkable that they got away with the time travel theme despite previous censorship on this topic. The plot is probably what makes this drama special.
The ensemble of actors do well together and the drama zips along nicely. It is impressive that they could pull this together, but how it scores higher than e.g. Mysterious Lotus Casebook is a mystery.