wow.... the first 4 episodes i was thinking maybe to drop this because it seemed like it was going to be repetitive and boring (i was thinking do i have to watch them relieve this day for the whole 15 episodes ), BUT i got hooked from the 5th episode and i am glad i stayed. This drama is so wholesome and everyone's story is touching and important. The police was smart and professional, no unnecessary dumbness to have a plot (very common in asian dramas where smart characters suddenly do dumb stuff lol). The acting was daebak!!! really one of the best i have seen in a chinese drama and there were no unnecessary scenes. totally recommend! epecially if you like time travel story lines