The uninvited banquet was specially created by Li Shimin in order to entertain foreign envoys, that is, the wine was poured into a special tube and let it flow naturally to the banquet, so that the envoys attending the banquet could drink whatever they like, regardless of etiquette. At that time, in the Tang Dynasty, foreign envoys who had seen such fashionable things all regarded Li Shimin with special respect and showed obedience, so naturally they dared not covet the Tang Dynasty again.

As a means of Li Shimin's diplomacy, uninvited visits not only showed the strength of the Tang Dynasty, but also established good diplomatic relations with many countries. Li Shimin's uninvited guests are nomads for the first time, and nomads themselves are more unrestrained and like to drink. There are as many as 1000 envoys in this group. They drank heartily at the party in Li Shimin. As a result, more than half of the wine was not finished, which made Li Shimin completely conquer this nation and attracted other countries to meet them.

Li Shimin's "uninvited" also set off an imitation frenzy. Many princes and ministers also hold uninvited banquets in their own homes for their own selfish desires. However, uninvited banquets were only famous in the Tang Dynasty, but not in later dynasties. Li Shimin's invention also reduced the trouble of war and consolidated the diplomatic status of the Tang Dynasty. I have to say that Li Shimin is a very good emperor, and he can be both prosperous and peaceful. At the same time, he made the Tang Dynasty a dynasty with prosperous economy and people living and working in peace and contentment.

Li Shimin was a wise emperor, who initiated the prosperity of Zhenguan, laid a good foundation for the long-term stability of the Tang Dynasty, and was also the reason why the Tang Dynasty developed for hundreds of years.