I started this series because of Sandra Ma, but I ended up liking William Chan as well. The story is focused on action, romance, family and friendships but also has some humor thrown in.

What I like:
• Excellent acting of William Chan (as Liu Zi Guang) and Sandra Ma (as Hu Rong) – They have a good grasp of their characters and were able to bring them to life.
• Great chemistry between the leads! Love their banter and how their characters and relationship developed. Of the dramas of Sandra Ma that I’ve watched, she is able to have good chemistry with her co-star.
• Supporting cast that gave good performances – They helped make the drama well-rounded.
• Interesting storyline – There were surprises up until towards the end of the drama.
• There is a balanced focus on action, romance, family relationship and friendship.
• Exciting and well-executed action scenes – William Chan knows how to fight! He's a good action star, and is also very good in the emotional scenes.
• Interesting opening theme – Instead of someone singing, there’s background music and some key dialogue from the characters inserted into it.
• Overall good OST – aside from the opening theme, the ending theme song is quite catchy; in fact, I often had LSS after watching a number of episodes.

Other Comments:
• There were a few scenes that I find unrealistic, but I know these add dramatic flair, so I'm willing to overlook them and not take them too seriously.
• There was a part towards the end that is somewhat unbelievable, bordering on negligence of protocol (not wearing a bulletproof vest on a critical operation?). It felt forced.
• Though he was not a major character, it would be good to have more info on Ah Se. He appeared suddenly and followed Liu Zi Guang around as his apprentice, seeming to live in his own wuxia world.

Final verdict: I would gladly recommend this series, especially if you like police action with romance.