Why is the sense of separation so heavy in the last few episodes of Mountains and Rivers?

First of all, Wen Kexing and Zhou Zishu. Wen Ke's behavior saved Zhou Zishu's hoary head all night, and his tendons were broken. In the end, what Wen Ke did was not said in the feature film. And the egg story tells us that they live in seclusion. But for everyone who only watched the feature film, this ending is an open ending, which was said through Zhang Chengling's mouth and I don't know what the ending is. Really, can't the theater give us a good ending completely?

Then talk about all the people in the Ghost Valley. There are bad people in the Ghost Valley, but there are also good people, such as all the people in the fickle department. Luo Fu Meng was disappointed by Zhao Jing and was a poor woman. Liu Qianqiao, too, finally let the person she likes go. Even the Scorpion King pitied her and gave her a choice to keep her and her loved ones away from the Ghost Valley, but she didn't expect to fight against foreign enemies with Luo Fumeng and die in the Ghost Valley. Because their roles are also well shaped, people think that their ending is too hasty. Even death is a word. They were full of joy to prepare for Gu Xiang's wedding, but they didn't expect to die on this day. What a pity.