There Is a Difference Between Concubines and Concubines: After the Exchange of Marriages, I Just Want to Help My Wife Become Emperor

In my previous life, my aunt loved her son so much that she exchanged me with my eldest brother in our infancy. From then on, he was regarded as a concubine, and I was the only legitimate young master in the Prime Minister's Mansion. I married the eldest princess of the dynasty, but he married into the general's palace. In the end, he followed Xie Zhaozhao, who was good at dancing the halberd, to guard the border. When the enemy invaded, he was besieged for more than a month without food. Reluctantly, he led the remaining troops to Kaicheng and surrendered, but was beheaded and hung at the city gate. And I was in the princess mansion, surrounded by beautiful women, living a life like a fairy. When he opened his eyes again, it was the day when the palace eunuch came to announce the decree. My brother-in-law did not hesitate to expose our background in public. He said that as the eldest son, he would enter the palace and become the consort.