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.