Si Teng Xixi's adoptive mother was Kong Jinghua. Kong Jinghua was a bamboo demon of the Duon tribe. She adopted Xixi not because she was kind or liked children, but because she wanted to nurture the child into the image she liked. However, Kong Jinghua was very harsh on Xixi's upbringing. She did not care about the child's feelings and even punished her. Therefore, Xixi was not satisfied with her adoptive mother's attitude and eventually left home.

Si Teng Xixi's mother was Yi Ru's adoptive mother, Kong Jinghua.
Siteng Xixi's adoptive mother was played by Kong Jinghua.
Si Teng had asked Qin Fang to take care of Xizhu in the TV series, but Qin Fang had chosen to give Xizhu to his adoptive parents. This was because Si Teng realized that his energy was about to be exhausted, so she split into the image of a little girl and entrusted it to Qin Fang. In order for the little girl to grow up happily, Qin Fang found a reliable adoptive family and left a note telling the little girl where to find him if she wanted to. Therefore, Xi Zhu had her adoptive parents to take care of her while Qin Fang continued to search for Si Teng. As for why Si Teng chose Qin Fang to take care of Xi Zhu instead of himself, the search results did not provide a clear answer.
Xixi was Si Teng's child. Si Teng loved Qin Fang deeply. In order for Qin Fang to have someone to accompany him, she split up and gave birth to Xixi. Although Xixi was adopted by Kong Jinghua, her relationship with Si Teng and Qin Fang was extraordinary. Xixi's behavior and personality were very similar to Si Teng's. She even knew Qin Fang's name without anyone telling her. Therefore, he could confirm that Xixi was the child of Si Teng and Qin Fang.
Siteng Xixi's adoptive mother, Kong Jinghua, was a member of the Duon tribe. Her identity was a bamboo monster. Therefore, Siteng Xixi's adoptive mother was not human.
[Nishitake Yukito's memories.] In the search results, many articles mentioned the relationship between Nishitake and Si Teng, and that Nishitake had Si Teng's memories. Some articles pointed out that Xi Zhu was Si Teng's clone and possessed Si Teng's memories and consciousness. In addition, some articles mentioned some details, such as Xi Zhu knowing Qin Fang's name and knowing how to sing old Shen Hai's songs. These were all considered evidence to prove that Xi Zhu had Si Teng's memory. Therefore, Nishitake had Si Teng's memories.
The half-monster Siteng Baiying ended up being killed by Siteng himself. In the story, Si Teng and Bai Ying were two clones of a half-demon. Bai Ying chose to kill Si Teng because of a disagreement with Si Teng. However, Bai Ying later found out that she had been deceived by Shao Yankuan. She carefully planned her funeral and was killed by Qiu Shanzhen in 1946. However, after his resurrection in 2013, Si Teng refused to fuse with Bai Ying and eventually defeated Qiu Shan with Si Teng. However, Si Teng also burned Bai Ying to death. Thus, the half-monster Si Teng Bai Ying was killed by Si Teng.
Yang Xun's mother in the river had stomach cancer.
Bai Ying in the half-demon Si Teng was Si Teng's doppelganger. She was the other self that Si Teng split off when he proposed to Shao Yan Kuan. Bai Ying loved Shao Yan Kuan deeply. In order to be with him, she plotted to kill Si Teng and replace her position. However, Bai Ying was eventually killed by Qiu Shan. Bai Ying and Si Teng were both monsters, but their personalities and ideologies were completely different. Bai Ying had a complicated inner world and a meticulous mind. Her behavior and thoughts were influenced by the external environment and her own emotions.
The happy life of a mother-in-law might have some problems because a happy life required many factors. The happiness of a mother-in-law might be affected by family status, economic status, personal values, personality, interpersonal relationships, and other factors. In some novels, the happy life of the mother-in-law might be affected by some unfortunate events or conflicts, such as the mother-in-law's poor family situation or personal personality defects. This kind of plot may lead the reader to think that there is something wrong with the happy life of the mother-in-law because the characters in the story have experienced some unfortunate things that may have a negative impact on their lives. However, in the novel, whether there was a problem with the happy life of the mother-in-law depended on the author's writing style and plot setting. In some novels, the mother-in-law's happy life was very beautiful, full of happiness and joy. Therefore, the reader needed to judge whether there was a problem with his mother-in-law's happy life based on the plot and character setting of the novel.