Leng Junye's Concubine, My Princess Is Not Easy to Mess With.

[Travel + space + strong men and strong women + cold-faced prince + invincible princess] Murong Yan, the chief medical officer of the modern Secret Service, accidentally time-traveled into the body of the eldest daughter of the Taishi Mansion of the Dakang Dynasty. The concubine's sister wanted to kill her sister and marry her instead, and she wanted to marry into the royal family. By chance, the younger sister became the concubine of King Qi as she wished, while Murong Yan was allegedly married to the main concubine of King Qin. The prince of the Dakang Dynasty was taken away from the Beiyue Empire as a hostage since he was a child, and the other princes who came of age one after another had their own little thoughts. The contest between six sons and the heir apparent took place in the Dakang Dynasty. Murong Yan was surprised to find that in this parallel time and space, there were no mythological stories, no Taishang Laojun, but there were mysterious sects and martial arts secrets in later novels. "Nine Yang Magic", "Six Meridians Divine Sword", "Sunflower Book", "Star Absorbing Technique", "The Great Shift of the Universe" and other superb martial arts were born one after another.