Background of artifacts: According to the inscription, this passage was cast in the era of "Sima Shaoyang was defeated by Jin in Xiangling". Shaoyang is Zhaoyang. According to Records of the Historian Chu Family, in the sixth year of Chu Huaiwang, Zhaoyang of the State of Chu breached Xiangling Mausoleum in Wei Yu. Therefore, the sixth year of Chu Huaiwang, that is, 323 BC, was the exact time to cast this festival. "E Qi Jun Jie" is a tax-free Jeff cast in the name of the king. Only a few aristocratic officials and businessmen can get tax-free Jeff from the king. Among them, "if you get a gold festival, you will not be levied" and "if you don't get a gold festival, you will be levied"; "When the horse's head goes out of Neiguan, it will be levied on the government, not on the customs." In other words, there is no tariff if there is a golden festival, and there is no tariff if there is no golden festival; When livestock enter and leave the checkpoint, they only need to pay taxes to the central government, not to the checkpoint. On the one hand, the monarch of Chu enjoys various privileges; On the other hand, the King of Chu also imposed strict restrictions on the scale, time, scope and goods types of Feng Jun's business (no trafficking in military materials), reflecting the strengthening of kingship during the Warring States period. "E Qi Jun Street" was awarded by the King of Chu, and Gong Chu filed a lawsuit, and the artifacts were magnificent. Because of its special use and exquisite manufacturing technology, it shows that the handicraft industry of Chu at that time had high technology in smelting and casting.