Naughty Princess.

Yin Qin Rou is a 21st century woman who gets thrown into the past and lands on a prince (literally). Suspicious of her origins, the prince, Xie Yan Qi, keeps her captive. Slowly, her 21 century attitude and disregard for authority changes him and he begins to fall in love with her. Meanwhile, there is turmoil in the royal family. The second prince assassinated his older brother to be next in line for the throne. All that's left in his way is Yan Qi, the third prince. Can Qin Rou protect him? And what if Qin Rou isn't the only time traveler...