Two or Three Things Behind Wearing a Book

You can play an escape room and travel through the book, and you can even travel through the prequel with your best friend to death? Or is this a love-minded romance novel where the main character is a beauty, not a king? Facing this world that seemed like the Warring States Period but was completely different, Lu Xian silently held her forehead. Okay, let's make peace with what we have come. In order to live well in this world until the end, Lu Xian decisively disguised herself as a man to help her children seize the throne, promoted reforms, started a vigorous career, and made the governance of Dachu prosperous. Who would have thought that with the development of his career, Lu Xian would discover that his good boy was actually reborn... PS: 1. Sister-brother love, the anti-routine female emperor master vs the dark and shy little wolf dog 2. The dynasties are fictitious, and the historical authenticity is negligible. 3. A career-oriented heroine, there is basically no fight between palaces and houses and besties. 4. The setting of two strong characters, the female protagonist is not stupid and sweet in love, so the plot of the male protagonist is always abusing the body and mind... If you dare to do it to the male protagonist, the country will be destroyed. I'm a newbie writing, so please forgive me for my limited skills~