There is no precedent for being crowned big princess in a palace or a palace. In North Korea, all princess royal had the experience of being a princess before her death. The only exception is Zhang Xipin. After seven years as a princess, she was abolished as Shu Ren and was executed for cursing Queen Inhyeon. Later, her son Jing Zong of Korea posthumously awarded her the titles of Grand Palace and big princess.

"Princess of Seven Days" is directed by Li, written by Park Zhao Minying, starring Wu Zhenyan.

The drama mainly tells the survival romance between Shen Caijing, the abandoned princess of North Korea, and Li Zhou, the Chinese emperor, who only became a princess for seven days.