Introduction to Pingyao Ancient City: Pingyao Ancient City was built in the period of King Xuan of the Western Zhou Dynasty (827 BC to 782 BC). It is known as one of the "four best preserved ancient cities" and the only one in China. One of the two ancient cities that successfully applied for world cultural heritage as an entire ancient city. It is an outstanding example of a Chinese Han city in the Ming and Qing dynasties. In the development of Chinese history, it shows people an extraordinary complete picture of the cultural, social, economic and religious development of the Han people.