Gong 宫-锁心玉 (Jade Palace Lock Heart)

This is a new chinese drama called Gong. It is about "Luo Qing Chuan is a modern-day girl who accidentally travels back in time to Emperor Kang Xi's era of the Qing dynasty. She gets embroiled into the princes' struggle for the throne and is thorn between her love for Yin Si, the eighth prince, and Yin Zhen, the fourth prince and future Emperor Yong Zheng." -DramaWiki

LINK:
http://www.mysoju.com/mainland-drama/jade-palace-lock-heart/
http://www.dramafans.org/drama/jade_palace_lock_heart
http://www.dramacrazy.net/chinese-drama/jade-palace-lock-heart/
http://www.viki.com/channels/2854-palace-jade-palace-lock-heart