I can't stop thinking about the revelation of Luo Binghe's heavenly demonic heritage and how striking the differences are in SVSSS vs PIDW. 

In terms of the original, how Shen Jiu's violence was unexpected but numbing after a point. How Luo Bingge's awakening would be a means to freedom; that while he might be reviled by human immortals, at least he no longer had any reason to give a damn what they thought. Demonic cultivation would exact the wrongs that had been acted on him tenfold in cold blood, to repay youthful admiration and blind trust with all the cruelty unleashed on him indiscriminately. How easy it was for Luo Bingge to choose power and performance because he had little if nothing else of substance to turn to. 

For Luo Bingge, otherness is an easy second skin because he's never once belonged in the first place. Sneering is natural when the entire world has done nothing but badmouth, ridicule, hit, and condemn you for things that were never within your control. “What does it matter that you're a monster now?” Luo Bingge seems to think, “You were and will be a monster always.” Every facade, every ill-intended act of deception and violence is merely injustice reaping its due.

Luo Binghe (Bingmei) has no such liberties.  

For Luo Binghe, the trappings of comfort and belonging end up yielding an entirely new problem, a reversal of Luo Bingge’s non-conundrum. His fear is that Shen Qingqiu’s love might be conditional rather than a despair that it is non-existent, because in many respects it is for the surrounding immortals; they go from calling Binghe a promising and shining youth to a demonic scourge born to invite ruin in the span of a handful of years. Shen Qingqiu, caught between what he wants to do versus what he believes he must do and his own fears, sours Luo Binghe’s trust to quivering doubt. What Bingge desperately craved was precisely what put Binghe through such unrelenting turmoil. Where difference and change is freedom for Luo Bingge, it is a chilling and unwelcome prospect for Luo Binghe. 

For Luo Binghe, the thought that he could be something monstrous to the person he loves is a form of self-annihilation; so much of his desperation to appear non-threatening to Shen Qingqiu is rooted in this self-same anxiety. In the wake of Meng Mo’s intervention, Luo Binghe cannot even bring himself to ask “What does it matter that you’re a monster now?” He can only cling to the desperate belief that if he can just conceal what he is for long enough, the future he always dreamed of might still be within his reach: an eternal life of peace by Shen Qingqiu’s side. 

For Luo Binghe, the rejection of his humanity means rejecting the people who nurtured him wholeheartedly (the washerwoman, transmigrated Shen Qingqiu) with love and kindness. Even despite the confusion behind Shen Qingqiu’s change, even despite how enigmatic and reticent he can often still be, Binghe recognizes powerful instances of tenderness and care in his actions. Someone who stubbornly healed his wounds, who was unable to watch him be brutally bullied without due recourse, someone who trusted in him and his potential with his whole heart. 

For Luo Binghe, power and demonic strength mean absolutely nothing because he has love. He doesn’t want them, and even when he does have them they are used in service of protecting Shen Qingqiu. Xin Mo isn’t able to take over because Luo Binghe isn’t strong enough to resist its temptations to subjugate the world, it happens because he exhausts so much energy trying to preserve Shen Qingqiu’s life that his resistance fractures. And even when Xin Mo succeeds in warping Binghe’s mind, the end result is still in service to a desire to be close to Shen Qingqiu’s heart. In the end, he continues to seek love.

Where the inexorable tides of change become opportunity (arguably even a boon) for Luo Bingge, for Luo Binghe this change is the focal point of his calamitous loss. How Luo Bingge's ascension is a ruthless and seamless transformation--all of his experiences hardening him into something harsh and brutal and unyielding to survive. How Luo Binghe's is instead a fall from grace; the corruption of innocence and stolen youth--of dreams razed to ash and safety obliterated.

And after all, doesn't it hurt so much more to have known peace and thrash that it will forever be out of your grasp? ...Than to live in such tumultuous waters that gentleness is an alien, loathsome, and unfathomable thing. For the former, a feeling of safety may never be restored--always looking back before looking forward. For the latter, there is nothing but the grim and solitary march on, eyes shuttered to all else.

I feel like that's why I love the ending of the third novel, as disturbing as it may appear to a lot of readers. Shen Qinqiu expresses his disbelief and hurt that Luo Binghe would lie to him and choose so much destruction, but for Luo Binghe it all has a singular source. Without love, he has nothing. He cannot choose a life devoid of the person he loves.  

(I once read a fic where Luo Binghe says ‘I never wanted to be a demon’ to Shen Qingqiu and I think it metaphysically changed me as a person. Every single day I think about it and try not to bawl my eyes out. Anyways.)