Can you recommend a novel where the female protagonist marries a more respected person as a princess?

She wanted the female protagonist of a novel to marry a person with a high status in an empire as a princess. However, the two of them were very respectful to each other and had four brothers. There was also a female protagonist who was doing experiments. She seemed to be called Qiu Lin and liked one of the four brothers. The highest authority in this empire was the commander. He always wore a mask and was very gentle to the female protagonist, making the female protagonist think that she used to know him.(It seems that the test subjects in the experiment will mutate.) This empire is calculated by physical fitness. The female protagonist has also undergone a series of training and her physical fitness has increased rapidly...

Answer 1

I recommend "The Mysterious Chief's Sweet Wife", a modern romance novel about wealthy families. The female protagonist, Ji Changxin, married the Empire's CEO, who was nearly ten years older than her, as a young girl. Her status was noble. I hope you like this fairy's recommendation. Muah ~😗