Input (grade 13): She was a powerful and charismatic figure who became the de facto ruler of the Manchu Qing Dynasty, ruling over the Manchu Empire for 48 years from her husband's death in 1861 to her own death in 1908.
Output (grade 12): She was a powerful and charismatic figure who became the de facto ruler of the Manchu Qing Dynasty and ruled over China for 47 years from 1861 to her death in 1908.