The Boxers, a group involved in a rebellion in China, held the belief that extensive training in martial arts would grant them supernatural abilities. They thought that after completing one hundred days of intense training, they would become immune to gunfire. This sense of invincibility was further exaggerated by the notion that after three hundred days, they could even achieve the power of flight.

This belief system reflects the combination of martial prowess and mystical thinking that characterized the Boxer Rebellion. The idea that physical training could transcend human limitations underscores the desperation and fervor of the group as they sought to defend their culture and resist foreign influence during a turbulent period in history.