Not sure about the video but as a novel 诡秘之主 was an nice and interesting departure from the usual Chinese fantasy novels so much so it is one of the few titles that I actually recognize/remember even though I finished reading it many years back.
The first few episodes of 诡秘之主was quite fast paced, which I guess was due to the budget issue. But later it gets better. Episode 13 which is the last episode of the clown arc was actually quite well done.
About the novel, agreed that it is unlike the usually Chinese immortal fantasy novel storyline which is all about levelling up. There are quite a lot of mind twisting plots in the story as we can see the mind battle between the main char and his rival the one piece glasses guy. Also as we go deeper, can sense the loneliness of the main char as he was forced to get stronger so not to get killed and save his tarot club members. But no one know that he did all the fighting. for people who are interested to read the novel, you can also listen to the 有声小说
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You can treat it as bedtime stories
I am now at the beginning part of the second book 宿命之环。but I feel that somehow it wasn't as well written as the first book. But I am only at the beginning chapter so reading through to see if it gets better later on.