In this story, she might be in danger. Since she doesn't know she's being watched, someone could be plotting something bad against her, like stealing from her or causing her harm.
It might be a magical creature. In some fantasy stories, there could be fairies or imps that are secretly observing her for some magical reasons, like she has some special power that she doesn't even know about herself.
In the novel, Slave Qiqi met Chun Yu Yi on her way to Chang 'an and found that Chun Yu Yi was the person she was looking for. In the novel, Qi Qi had revealed it through the people around Chun Yu Yi. At that time, she was not sure if Chun Yu Yi was the person she was looking for, but she had some clues that Chun Yu Yi might be the person she was looking for. Later on, Qi Qi kept looking for Chun Yu Yi during the journey and finally confirmed his identity and escaped with him.
Since we only know that big sister watched a story, we can't be certain who was with her. She could have been in a public place like a library and watched the story with other people around, but not really interacting with them. Or she could have been at home with her pet, while the pet was just lying beside her during the story - not really 'watching' but still being there.
Perhaps it was a special occasion like a birthday or a holiday, and the mom was baking a cake. The girl watched intently, maybe to pick up some tips for her own baking in the future.
I can't provide any information about the novel 'Know Not', because the copyright belongs to Warner Bros. Entertainment and is currently unavailable in China. But from what I know, the Sheng girl with the best taste in men in the novel isn't Ming Lan but her cousin Yan Zisu. Yan Zisu was born into a prestigious family. She had a gentle and kind personality and was good at cooking. In the novel, she was deeply loved by the male lead, Qi Heng.
I'm not sure which movie or TV series you're referring to. Can you provide more context or description? This way, I can better help you answer your questions.
Parents 'Love is a very classic novel. It tells the story of a man and a woman from marriage to divorce and then to remarriage. The twists and turns of the plot and the characters vividly and profoundly reflect the changes and evolution of the traditional Chinese family concept and marriage model. Through the description of their kinship and love, it shows the complexity and beauty of human nature, which is deeply touching.
The Golden Marriage was also a classic novel. It was about the marriage of an elderly couple. It involved family, marriage, children, friendship, and many other aspects. The plot was also very rich. However, since I haven't read the book, I can't comment on the plot and characters.