One of the Northern Dynasties, Yuwen Jue was founded (AD 557-58 1), which is known as the Northern Zhou Dynasty.
The only female emperor in China, Wu Zetian period (690-705 AD) was called Wu Zhou (Southern Zhou).
One of the Five Dynasties, Guo Wei was founded (AD 95 1-960), which was called the later Zhou Dynasty.
After the rebellion of King Wu Sangui in Qing Dynasty, the founding of the country was named Zhou.
Surname: See the entry "Zhou surname".
Note: above the mouth is "earth", not "scholar".