The Tigress of Rouge: Princess Yongle

Before the heroine's family is destroyed, the plot is full of all kinds of stupidity, cruelty, and willful mischief. She's so spoiled and idiotic that you want to beat her to death. Please understand: that silly girl is only three or four years old, yet she has an absurdly high adult IQ. Once she grows up, this hopeless author, with an IQ that's nowhere near passing, definitely won't be able to handle her... So if you want a normal plot... just wait until the heroine's family is destroyed... As a child, Princess Yongle thought her title, "Yongle," meant she would be safe and happy forever. She believed it carried everyone's hopes for her and their sincere blessings. Later, Princess Yongle came to understand that hopes are always somewhat removed from reality. Everyone knew that Feng Ninghai, the Supreme Demon Lord, was in love with the Azure Wave Fairy, Jing Yu. The Azure Wave Fairy sacrificed herself to the demon, leaving behind Feng Qingbo, the Princess of the Martial World. Their story became a celebrated tale of immortal lovers. Everyone knew that the Sage doted on Princess Yongle, and that her father, Lou Wai Lou, was the wealthiest man in the land and the greatest warmonger. Before she became an orphan, Princess Yongle saw her birth father twice. The first time, her mother was pregnant with her younger brother. The second time, her mother was bedridden with a lingering illness and was ultimately murdered. Later, Princess Yongle learned a secret. Princess Yongle swore to spend her whole life killing Lou Wai Lou! Anyone close to him would be her enemy! She succeeded. She cultivated immortality and lived as long as heaven and earth... →_→... This story has all kinds of BOSSes and handsome men, while the male lead is basically just there to make up the numbers... The protagonist has it rough and is dedicated to making things even rougher for everyone who isn't the protagonist. Spoiler for the ending: What goes around comes around, and justice is served!