Go Princess Go

Zhang Peng is a playboy who hits his head as he falls into a pool when he's trying to run away from an ex-girlfriend. He wakes up to find that he's traveled a thousand years into the past. But, that's not even the biggest problem, he also wakes up as the crown princess of the dynasty - Zhang Peng Peng. Hilarity ensues as Zhang Peng weighs between trying to get back to his time and leveraging his new female identity to seduce all the concubines and women he can.