The Unbreakable Bond.

Yun Ze is a successor of a medical group. To secure the inheritance and to save his life, his father Zhao Hua deceived Xiu Huan and coaxes his illegitimate son Yun Cong into donating his bone-marrow and organs to sustain the life of Yun Ze. When Shi Yuan came into the life of the two brothers, Yun Ze gradually falls in love with her, not knowing that Yun Cong has discovered Shi Yuan likes Yun Cong.