It can be described as kind of a feudal system. There's multiple kingdoms who have allegiance to the Zhous, and at multiple times, they have different degrees of autonomy and of power. Now, the Zhou Dynasty is generally divided into the Western Zhou, when the capital's in the west, and the Eastern Zhou Dynasty, when the capital moves to the east. Now, the Eastern Zhou Dynasty, this period right over here between 770 BCE and 476 BCE, often known as the spring and autumn periods, this is often referred to as a significant period of philosophical golden age in China. It was the time of Confucius. It was the time of Lao Tzu, who comes up with the Dao or the core of the Dao philosophy. So a lot of major philosophical underpinnings of even modern China start to emerge in this time.