Add them all up together and you have the perfect plot for a drama. Throw in some special effects, some intrigue and romance, some snappy conversations, a Cold War background, and you have a Hollywood blockbuster.
But no, none of these happened in the West, nor did it happen in recent times. To appreciate this story fully, let us go back to the Dynasty of Warring States of China, around the years of 476BC-221BC.
The aforementioned female spy is Xi Shi, the first of the Four Greatest Beauties of Ancient China.
