Scarlet Heart Episode 31

Minghui [8th Prince's first wife] meets up with Ruoxi. Ruoxi realizes at last that, under a predestination paradox of time travels, of everything that happening due to her telling Yinsi to be wary of Yinzhen long ago, thus the future was never going to change by her actions but inadvertently she's shaping the future outcome of history as it is going to be written. Yinxiang finds Ruoxi on Yinzhen's orders. A depressed Ruoxi confesses that everything is her fault. She collapses and has a miscarriage. The imperial doctor tells Yinzhen that Ruoxi will never be able to bear children again. An angered Yinzhen orders Yinsi to divorce his wife. Yinsi refuses, to which Yinzhen replies that should he disobey orders, then his entire family will have to pay with their lives. (Source: next-episode.net)