To Whom The Deer Falls summary:

Lu Nan zhi reincarnated into a stand-in romance as vicious female rival, and her task is to make the heroine Chen Xi happy. The industry beauty thought that attacking the heroine was also a way to make the heroine happy', so she took the initiative to pursue the heroine. But she gradually felt that the attitude towards herself from the surrounding characters seemed to be different from that in the book?+