The Butterfly Knows Nothing of Summer

It's so cruel. Did the author write this ending to fill the reader's imagination with fantasy? At the end of this book, if Xia Zhi was left alone like that, not wanting to escape, and then call 110 to save them. The male protagonist will be beaten to death by Liu Dong! Author, why are you so cruel?

The mutual redemption and affection are so well written. Although their characters are so tolerant, it's really frustrating to not kill the bad guy yourself (;;)