Transmigrated Doctor Princess

She, Luo Jiuhuang, the renowned poison doctor of the 25th century and the first-born daughter of the Luo family in the Biyun Continent, who has been labeled a loser. 
But one day, after transmigration, she takes over her alternate self and rewrites her destiny. She refines divine pills, forms contracts with mystical beasts, challenges emperors, tears down palaces, beats administrators, and does whatever it takes to achieve her goals.  
One day, a mysterious man chases after Luo Jiuhuang and says, "Follow me, and I'll give you the freedom to do whatever you want."   
Luo Jiuhuang smiles and asks the emperor, "What if I destroy your kingdom?"   
The emperor embraces the woman and replies, "Then I'll just conquer it again and give it to you."  
In the kingdom, it's said, "You can mess with the emperor, but you definitely can't mess with his wife."