She was the eldest princess of the current dynasty, and she was favored by thousands of people. She rejected all the talented consort candidates in the world for one person.
She was the only daughter of the fourth prince and the apple of his eye. She met someone by chance and devoted her whole heart to him.
And they are just two accidents within accidents that came from time travel.
How will the relationship between the four develop? Let's look at "Harmonious Relationship".