Little Savage Princess

She was originally an eccentric high school student in the 21st century, but because she picked up a piece of jade while out on an outing, she traveled to the Tianyu Dynasty and became the daughter of the prime minister. The emperor brought the six-year-old prince to celebrate. He liked her very much, so he gave her to the prince and made her a princess. Although he was only six years old, he was wise and showed amazing intelligence since he was a child, so the entire dynasty liked him. But, she was the only one who didn't like him. One time, she met the third prince who was three years older than her. He was born to an unpopular concubine. Although he was a prince, he was often bullied. She didn't care when he was young. She played with him and they became close friends. He also gradually fell in love with her. In order to be with her, he decided to compete for the position of prince. However, she disappeared. However, as time passed, everything changed. Who is her true love? 