Its not a cliff hanger ending. The end shows that he was on a different drug mission and Kexin going to join him in 1 week time. All of them survive the explosion. Thats why all of the police officer including Kexin's brother attend the ceremony.
I wanted to check which dramas you already saw, but you don`t have a watchlist... before recommending something…
Yes, I didnt really use my account to update what I watched. Thanks for the suggestions. I think My Liberation Notes seemed a bit depressing but I will probably check it out later.