This two part series opens the door to China's Forbidden City.  It was the inner sanctum and pulsating heart of the Chinese Empire.  Today it is modern China's greatest tourist attraction, Beijing's Forbidden City.  For 500 years, it served as the home of the almighty Emperors of China, along with their wives, concubines, and entourages of ten of thousands of eunuchs and civil servants.  However, the Forbidden City is more that imperial residence.  It is the center of the universe and a unique complex of structures revealing a hierarchy of power, both imperial and divine.