Well, slightly disappointing, but I still love this series.

I did not only expire that this episode would rather focus on Yunzhen's past. The main pair barely got the screen time and annoyed me. The past should have been incorporated into the drama, in the special episode we can see the relationship between Shi Lei and Yunzhen, how they live happily. Received at least a few minutes at the end of the episode.
So for me it was a little bit bit and wonder how and why they loved each other. The special episode is unnecessarily wasted in the past.
However, I still love this drama and I still love Yunzhen Shi Lei pairs.
This can argue from the chemical level, which pair is better ... Yunzhen Zitong or Yunzhen Shi Lei ...
I'm still worshiping Yunzhen Shi Lei pairs.