Why was Wu Zetian famous?

Wu Zetian was famous for being the only female emperor in Chinese history, ruling during the Tang Dynasty from 690 to 705 AD. She initially rose to power as a concubine of Emperor Gaozong and later became his empress, eventually proclaiming herself emperor in her own right. Wu is known for her political acumen, promoting Buddhism, and implementing significant reforms that strengthened the central government. Her reign remains a controversial topic in Chinese history, reflecting both her accomplishments and the challenges she faced as a woman in a patriarchal society.