#zhuxin

Think about it; the sword has only ever had two wielders. Jun Wu used it with evil, killing intent, but right before Fangxin was passed down, the sword was used to fatally stab Xie Lian 100 times. This sword—who had only taken one life at a time until this point—now had the arguably overwhelming experience of being glutted on the life of a single person 100 times in one sitting.

This could be seen as the equivalent of gorging yourself on one specific food so many times in a row, in rapid succession, that you make yourself sick on it. You may never want that food again, you may feel nauseous for a long time when you think of it. You might enjoy it, on rare occasions, but you’re forever reminded of that one time when you overdid it.

I had a few crashouts while drawing her cause her outfit and accessories were so detailed lol.

In TGCF, Bai Wu Xiang gave Xie Lian the sword 芳心 (Fang Xin) (Chapter 190), which was used to stab him multiple times.  This sword was later revealed that its true name was 诛心 (Zhu Xin) by none other than Jun Wu.  But what does the meaning of the two words mean? 

芳心 (Fang Xin) refers to a fragrance from a flower, which symbolises a beautiful heart.  It does also refer the affections of a young girl. (Ie. pure and innocent).  On the other hand, 诛心 (Zhu Xin) means to expose someone, or accusatory thoughts or intentions.  The word 诛 also means to kill.  

🦄 My analysis (mixed with this opinion piece)

Soooo, what does this mean?  Interestingly, the two swords are opposites of each other.  One represents purity (like a flower) and the other to kill/expose.  The first thing I thought of the portrait of Xielian with the sword and flower. (芳心 - the flower, 诛心 - the sword).  This juxtaposition reminds me of Chapter 194-195, where Xielian wants to unleash the vengeful spirits in his sword, but gets annoyed sight of the white flower (which implies he still has followers aka people who believe in him)

And just which character believes in him the most?  HUA CHENG.  Well, we all know that Hua Cheng is the same child that offers Xielian flowers in Chapter 72 and 73, you could say that his feelings are thus symbolised by the flower.  Likewise, Zhuxin was a gift from Jun Wu, so that represents the resentment that he embodies.

Reference: (1) (2)