In the long history of feudal autocracy in China, the latest and best local products of any party have to be turned over to the imperial court for royal use, which is called tribute.

According to the Book of Yugong, "A tribute is a tribute, and a foreign body born in the land of offering sacrifices to the valley is a tribute." The following is a tribute, and the above is a tribute. It can be seen that tribute is a "foreign body" born in a place and a specialty. This system began in the Xia Dynasty, and Hanzhong was famous for its rich products and hatred of the rich, and paid a lot of tribute in previous dynasties.

For example, the tribute wine even has the word "Gong" in its name.