In the Zhenguan period of the Tang Dynasty, all kinds of waste were prospered, the government and the people were in harmony, and everyone lived and worked in peace and contentment. Many big cities, such as Chang’an and Luoyang, are crowded with pedestrians on the streets. They sell all kinds of goods, and there are many kinds of rare foreign matters, either from foreign countries or from inside. Confucius said: “food and lust is also the nature.”. Kuang Tang Zhenguan prosperous, the people are self-sufficient. As the saying goes, “food and clothing is for lust *”, so the people of the Tang Dynasty are very vettery.