Reborn to marry the emperor, I just want to confuse the emperor and seize the throne

In her previous life, when Jiang Fenghua was given a marriage to be the princess of Heng Wang Xie Shang, she was not liked by the king. She thought that as long as she observed etiquette, did everything herself, kept to herself, served with all her heart, and even flattered and obeyed, her sincerity would be exchanged for true love and the clouds would clear and the moon would shine. Unexpectedly, her mother-in-law's kindness to her was fake, and her husband's heart was hard and he was really concerned about the concubine. Even her two biological children were instigated by the concubine to hate her and resent her. At the age of thirty-five, she died of depression. When she opened her eyes again, she was reborn back to the age of five. Knowing that she would be given a marriage to Heng Wang as a princess at the age of fifteen, and knowing that Heng Wang would rise to the top and sit on the throne in the future, she patiently planned...