Reborn as the Fifth Imperial Princess, I Flirt with Kangxi. Was I Just Filling a Plot Hole?

One of the five founding ministers of Wengkumafa, the Heshuo Princess of Ukumama. As the much-loved youngest daughter of a first-rank duke and Minister of the Imperial Bodyguard, Tana felt she had absolutely nailed the whole business of being born into a good family. She was sure to enjoy boundless wealth and glory, watching the nine princes fight over the throne with a smile. Perfect! What does Cheng Xiang think? The designated Fifth Prince's consort is reborn and refuses to marry the Fifth Prince and suffer again. Instead, she arranges for the drunken Kangxi Emperor to take her hand. The marriage is called off, and Tana, who was only supposed to be there for appearances, is given to the Fifth Prince as compensation? Others say it's a match made in heaven, but Tana, who was born into this life, knows the truth: Historically, the Fifth Prince favored his concubine and neglected his wife. His birth mother, Consort Yi, considered Consort De, the ultimate winner, her greatest enemy. His younger brother, the Ninth Prince, was a staunch supporter of the Eighth Prince. He was stripped of his title and removed from the imperial clan, then renamed Seshehei. Because of the trouble his brother caused, the Fifth Prince was also denied the new emperor's favor. Tana stroked her chin. Since she couldn't change the imperial edict, she'd just have to change everything standing in the way of her continued wealth and prosperity~ And so... The Empress Dowager protected her sweet granddaughter-in-law at every turn. Consort Yi stopped picking fights with Consort De and focused on earning praise and rewards for her daughter-in-law. The Ninth Prince got the money he'd given his Eighth Brother back, saying that all the best things should go to his dear sister-in-law! And the Fifth Prince, who supposedly favored his concubine and neglected his wife? He protested his innocence: "I swear on heaven and earth, there's not a single weed in my back courtyard!" Only reborn He Talah was left in tears. She'd tried so hard to avoid misfortune and seek good fortune, so why was she still without a child or her husband's affection?