The Founding Empress's Rebirth

When they worshipped heaven and earth atop Mount Tai, he promised that one day they would rule the world together. Her Guo clan spent money and grain, and sent troops and generals to help him win the empire. Yet once peace settled over the land and all was well, he deposed their eldest son, stripped her of her position as empress, destroyed her clan, and killed 1,863 members of her family! Reborn a hundred years later, she found that he and the descendants of that wretched woman still enjoyed an endless empire. How could she not hate them? By imperial decree, she, an orphaned daughter of a noble family, entered the imperial harem once more... P.S. This is a story about a heroine who is reborn to exact revenge, and goes on to become an empress in her own right. There's little romance.