How can I see Fa Hai killing Bai Suzhen? How to evaluate it?

Hehe, it depends on whose perspective you take when looking at things. Just like in the story of \"The Crow and the Fox\":) From the crow’s point of view, it is the fox who deceitfully took the meat from its beak. From the fox’s point of view, it took advantage of the crow’s vanity; with just a few kind words, it managed to get the meat from the crow’s beak – quite clever. The same is true here: Fahai represents justice, while the snake represents injustice. Justice must protect the naive Xu Xian from being deceived or harmed. On the other hand, the Snake Goddess is righteous; she wants to repay Xu Xian, not to cause any harm. But there’s one thing that’s not clear here: what the author wants to convey is love, justice, resistance against the forces of so-called justice, or something else,,,,:)

Mythological stories can keep being created!

If I were to look at it, I would do so from three different perspectives, in a comprehensive manner. 1. Fahai realized that the demon was trying to deceive Xu Xian and possibly harm him; it was his duty to eliminate such demons, and he fulfilled this duty with great skill – he did the right thing! 2. It is only natural for a snake immortals to repay kindness; they long for a good life in the human world, and will spare no effort to pursue that goodness, risking their lives in the process. Their methods are skillful – they are doing the right thing! 3. Finally, there’s this unfortunate person who is incompetent, powerless, and lacks determination. One can only stand there… not really stand; rather, one is trapped in the struggle between two forces, serving as a spectacle for onlookers to comment on. However, because he approached it in a very simple manner due to the lack of any specific guidelines, various interpretations emerged over time; some even mixed in elements from the story of \"The Magic Lamp\". Because of the ‘three lackings’, you can simply treat him as a bargaining chip; it’s very easy to do that, and it’s done excellently! :lol

It's a generalization; even demons can have good sides

Oh, one more thing to add: Fahai didn’t kill the Snake Immortal; he just imprisoned her. It can be considered bringing them to justice; in the social environment described by the author at that time, matters related to things other than humans were to be resolved among the gods and deities themselves: lol

In fact, Fahai is infatuated with Xu Xian. Well, so it was a murder out of passion

It’s probably the biases imposed by the environment around us. Just as was said above, demons aren’t necessarily evil; this story also teaches us that principle – we shouldn’t judge people based on preconceptions