I got to watch the reformatted 38 longer eps vers.
I loved the dynamics of the 2ML they obviously developed a deep bond and affection for each other to the extent they would die for them. Their lives are put in danger enough times that it is clear to see how they look after each other. Both leads are above average intelligence and looks so they carry the drama easily.
Huang Jun Jie plays Ling Jiu Shi had an Alpha male persona but was somewhat restrained in body language.
Zhi Guang plays Ruan Lan Zhu in his first major role and at 24 yrs old I feel this will open a lot more doors (pun) to his career.

The side characters are also interesting although their screen time is shorter. The Spirealm game has tasks behind the 12 doors; to locate the door ghost, find the exit key and uncover clues on how to not get killed are what kept me hooked.

I liked the colour palette used and often moody lighting added to the sense of danger. The opening track, Cánh Cửa - Hạ Chi Quang (The Door) and deep singing voice is very hypnotic. Huang Junjie also sings the ending theme OST. The other tracks are magic https://www.youtube.com/watch?v=2qPMm_cCrDo

This is based on a novel and apparently suffered a little from the adaption but not having read the story I thoroughly enjoyed this version and was never bored.