If someone wants to GM it, I have no objections :)
My own GMing style tends more towards character driven, but that needs characters willing to take the lead.
Giving the rules a quick glance, I can't see a particular time period mentioned.
The History of the Empire
The primordial egg gave birth to Pangu, the first being. Through him were born the Sky, home of the Gods, and the Earth, home of the mortals.
Soon, the people gathered under the guidance of the three Majestic Ones, and despite the rebellion of the Warlord Gonggong nearly destroying the world of yore, harmony finally prevailed thanks to the wisdom of the Gods. The people were finally united.
The mythical Yellow Emperor was the first enlightened ruler of an empire that covered all things under the Sky. First of the Five Sovereigns, his reign was followed by that of rulers as wise and benevolent as himself, and the Empire prospered.
Then followed the time of the great mortal dynasties: the Xia came first, then the Yin, and finally the Zhou. In succession, they received the Celestial Mandate from the Emperor of Jade, Ruler of the Gods.
But the power of the Zhou dynasty waned and the ambitious and traitorous Emperorís vassals took their independence and created their own kingdoms in the name of the Dragons they revered. Many believed that the Empire had fallen into the invisible grasp of a malevolent sect dedicated to the power of death and disorder...
There followed a period of constant warring, but also of great intellectual progress, which saw wise thinkers like Lao Zi or Kong Fu Zi spread their teachings throughout a land devastated by the violence that the seven powerful Warring States inflicted on each other.
The Warring States
Seven large kingdoms occupy the land which was formerly the Empire of Zhou. They all have but one goal : to conquer the other kingdoms in order to recreate the Empire under their rule. Warfare, but also spying, diplomacy and economy are the weapons of this century-long conflict.
Qin is the most powerful of the kingdoms. It used to be semibarbaric, but harsh reforms have contributed to its rise. Its ruthlessly effective administration is a powerful tool allowing its resources to be focused towards the conquest of its rivals.
Zhao is a kingdom strongly influenced by the people of the bordering steppes. Its powerful cavalry and flourishing economy make it a state both respected and feared.
Chu was formerly an enemy of the Empire prior to its dislocation. It is now one of the major powers among the kingdoms,
with the largest and most exotic territory.
Qi is the kingdom of scholars and well-read men. Libraries and universities dot its land, and the ruler neglects military power in favour of cultural richness.
Yan, located at the extreme North-East, fights constantly against barbarian raids but must all the same deflect the invasion attempts from rival kingdoms.
Wei used to be a flourishing land, but its power has faded and it now constitutes an easy prey for its rapacious neighbours.
Han is circled by more powerful kingdoms and tries to keep its integrity through diplomatic means, its military strength might being the most limited.
That's the core setting, but it would probably be easy enough to come up with a generic setting, and play something out from there. The Water Margin has a nice setting .. the 108 reborn heros, fighting against a corrupt government .. lots of opportunities for mischief there :)