As the Principal Wife, I Team Up with the Concubines to Take Down the Lord

In her previous life, Chu Wenyan believed Xiao Chezhi when he promised they would be the only ones in each other's lives and that he would never take a concubine. Yet he was secretly keeping a mistress outside the home! And in the eyes of everyone who didn't know the truth, he was still seen as a devoted and faithful man?

She even put up with that, but then his beloved, the transmigrated heroine Mu Xue, returned, and Xiao Chezhi actually tried to drive Chu Wenyan to her death to make way for her?

Reborn, Chu Wenyan is done catering to him. She brings all his beloved women into the household, so everyone can see for themselves just how devoted and faithful Xiao Chezhi really is.

Wait, why have all the concubines ended up won over by Chu Wenyan instead?

Why has the Fourth Prince, who was supposed to be loyal to Xiao Chezhi, kicked him aside and started working directly with Chu Wenyan?

Why has even Mu Xue, the transmigrated heroine he loved, abandoned Xiao Chezhi and switched her support to Chu Wenyan?

Why is Chu Wenyan's life getting better and better, with everything going smoothly?

(No female characters are abused, there are no malicious, brainless female antagonists, and the female supporting characters generally get good endings.)