Final answer:
Empress Wu's alleged ruthlessness in personal relationships is largely a result of historical bias and gender stereotypes.
Step-by-step explanation:
Empress Wu Zhao, the first female ruler of China, has been portrayed as ruthless in her personal relationships by later scholars. However, this depiction is largely a result of historical bias and gender stereotypes. Empress Wu's actions and behavior were not significantly different from many other rulers of her time, regardless of gender. She was a competent and intelligent ruler who focused on good governance and stability, rather than being excessively ruthless in personal relationships.