I watched this a long time ago when it first came out. Now, I just finished rewatching it.  The story is interesting.  It is basically simple mysteries being solved by the four officers that involve corrupt government officials and some characters in the martial arts world.  It is about justice prevailing.  It isn't exceptionally great mysteries though.  Not very suspenseful. It is drama heavy but not in a way where there is confusing relationship lines. It has martial arts but it doesn't really put much effort in the battles. But, it does look smooth and not forced. The characters were interesting and meshed well but the acting was just a little better than saying so-so. Some of the female characters needed better casting to be honest.  Music, no comment, nothing special.  Rewatch, it is one of those family friendly slice of life genre shows so probably. Typical TVB stuff. I would recommend it as a "pass the time" type recommendation, but it really has nothing on the historical martial arts dramas that are out now.