"Zhao" is a common Chinese surname, often romanized as "Chao" in some regions. It is one of the most prevalent surnames in China, with millions of people bearing the name. The origin of the surname can be traced back to ancient times, linked to various historical figures and dynasties. In addition to being a surname, "Zhao" can also refer to a state during the Warring States period in ancient China. This state played a significant role in Chinese history and culture, contributing to the development of various philosophies and military strategies during that era.