How to evaluate the development of trap plots in Korean dramas?

Generally speaking, it is easy to feel top-heavy when the plot is reversed, because it means that all the preparations before must have two sides, only looking at the process, and the pace is a bit slow. ?

Li Ruizhen's acting is good. I don't think too many variety shows are good for actors. Now it seems that it is still the actor's own acting skills. It is not easy for Lee Seo-Jin to create his own variety image in this play. Every episode has to be reversed, but fortunately there are only 7 episodes, otherwise it will be boring.

However, after reading it, it always gives people a very educational feeling ~ but when I see the ending, I can almost be said to be disappointed. Such a wonderful and well-planned unsolved case was ruined by such a cliche and shoddy ending.