Was there a novel where the female protagonist transmigrated to become an empress?

She had seen it a long time ago, but she couldn't remember its name. The female protagonist had transmigrated into a fictional history and became an empress. She had martial arts and was called Yun 'er. In the end, she had four concubines. One was Noble Consort Mo, the other was Consort Yi Xian, and one of the concubines was once the emperor of another country. The female protagonist had cheated her of a military seal. One of the concubines had a head full of silver hair. In one of the plots, Noble Consort Mo's junior sister knocked the female protagonist unconscious with a brick. The female protagonist returned to the modern world, and Noble Consort Mo killed her junior sister. In another plot, the female protagonist went to a brothel (male brothel) and was caught by the male protagonists, who carried her back to the palace as punishment. In the end, the introduction said that the female lead still preferred Noble Consort Mo. Who has read this book? Tell me the title!