Kokuto:

That's a good question ...  I would guess that whatever he could control, he did, to make it pleasurable.

Whether intentional or not, yes, they both knew the other knew of the physical sensations.  Remember, when Cang Xuan had the bug, he told her he could feel XL biting her neck and she should avoid those sort of encounters (sexual) when wounded.

Oh, thank you, I remembered that just now! But did she come to realize this, or did she, as usual, postpone this realization beyond her reality denial syndrome? Somewhere in the novel, she seems to have told someone that Xiang Liu could only feel physical pain from her. Did she really think so, or was she lying, as usual (what a lying heroine!). If she realized that he felt not only her pain but also her other physical sensations, then wouldn't it have been awkward for her to kiss Jing, knowing that Xiang Liu felt it? Would she have cared? And wouldn't she have been embarrassed or anxious at all about having those sensations from Xiang Liu? I wouldn't agree to feel that way about some man who was just my friend and would not let it happen again once realized. 😬

 HeadInTheClouds:
For me, the drama is not a good adaptation of the novel because it didn't keep the integrity of the novel.

I feel the same. 

I will say that the adaptation is like a meme with pencil drawing of horse.
 

Most things are wonderful. The acting of ALL the actors, without exception, is wonderful. Of course, Tan's acting is at a sky-high level. I would put Yang Zi's acting a little lower than him. But she had the hardest time. Because her character was deprived of any consistency and completely changed the meaning. In the scene where she marries Jing and in the final scene where they walk side by side and she carries a doll - I literally see on her face the expression "I don't know what I'm playing, and what I'm supposed to be playing at all, sorry."

But in general, this novel is like a house of cards. It's enough to pull out one card - and everything will be destroyed. The novel very successfully divided the fans into two hostile camps which is beautiful and unique. The novel is a litmus test. Depending on who you root for - it immediately says who you are, and what your general vision of life is.  

And in this sense, this novel is like a certain balance of "yin and yang" (such a Chinese way). And the only thing the author should have protected was this balance. Instead, she destroyed it ( not Chinese way). Of course, there is no more yin-yang in the series.
 HeadInTheClouds:
Jing, more than anyone, had a front row seat to the Xiang Liu/Xiao Yao's relationship. This was very clear in the novel.

Your interpretation of this will depend on how you view this love triangle.

Have you read the novel, or is this purely from the drama? 

Yes, I have, but quite a while ago though. I know that Jing had 'the front seat', but I meant that it always surprised me how shockingly ignorant XY was. She knew Jing loved her, and she cared about him but didn't think that her feelings for XL would/could hurt Jing. 

On the other hand, she  did try to downplay the meaning of the Voodoo King's words (as if she didn't realise that Jing already knew everything about her feelings).

 HeadInTheClouds:
In the drama, Xiang Liu never drew blood from her neck once she became Xiao Yao.

Well, yes, not in the drama, but he did in the novel.


 MountainPine:

I share your vision on this.

Just think of the moment when, already on a late stage of the relationship between Jing and Xiao Yao, he suddenly discovers that she is still preparing poison for Xiang Liu. He asks her anxiously about it, and she is like: "Yeah, so what?" And then she is completely indifferent and ignoring his emotions at that moment. She does not even try to reassure him in any way.

That! That's what I mean. What a good example! And your question re: what XY knew about the bug connection and what XL could feel through them is spot on. CX did mention to her that he could feel her arousal, but in some way that was part of biting and blood drinking. Did XY assume CX would feel the same if that was a normal kiss (or more) without any biting? I think there was no any other moment in the drama or novel that would confirm XY's knowledge? 

 MountainPine:
Those physical sensations his bites had caused in her - was it an effect beyond his control, or was he somehow doing it on purpose? If unintentional, was he even aware of it? He must have felt what she felt when he bit her hand, in her princess's chambers.

I was under impression that the physical sensation was unintentional and more like a side effect (the way predators have different types of venom that have different effects on the body) .