this was the most addictive drama i have seen recently
generally i dont watch period dramas but this was exception ... it was soo good and the actors were good
here are some synopsis from wiki
During the chaotic Northern and Southern Dynasties, in Northern Liang's royal family lived a princess named Feng Xin'er (Tiffany Tang) who was kind, carefree, and who was loved by all. A marshal from the Chiyun clan of Northern Wei takes it upon himself to overrun Northern Liang and turn it into a bloodbath, forcing the princess out of her comfortable life.
Li Weiyoung, the daughter of the Imperial Tutor's Department from Northern Wei, shielded the princess from harm. However, Weiyoung dies protecting Xin'er, and the latter assumes Weiyoung's identity to reside in her home, where she is disliked and shunned. She thus took it upon herself to fight against the Chiyun clan and unexpectedly became entangled with Northern Wei's prince, Tuoba Jun (Luo Jin). Through her struggles, she gains wisdom and is finally able to find peace for her family and live true to her heart.
http://www.dramafever.com/drama/4975/1/The_Princess_Weiyoung_-_%25E9%2594%25A6%25E7%25BB%25A3%25E6%259C%25AA%25E5%25A4%25AE/?ap=1