At that time, Zhu Yuanzhang had not yet defeated the Yuan Dynasty. After all, the Yuan Dynasty was a very powerful government at the time. In order to win over the Han people to fight against the Yuan Dynasty, Zhu Yuanzhang published a speech on the war against the Yuan Dynasty during the Northern Expedition against the Yuan Dynasty. The slogan said that the Yuan Dynasty was a "Hulu beast".

Although the Yuan Dynasty ruled the Central Plains for almost a hundred years, it was always a Mongolian regime, and the status of the Han people during the Yuan Dynasty was very low. Later, in the Qing Dynasty established by the Manchus, although the Manchus also had privileges, the status of the Han people was not. It is considered particularly low, but in the Yuan Dynasty, the people of the Yuan Dynasty divided the people into Mongols, Semu people and Han people. Among them, the status of the Han people can be said to be very low. At that time, many Han people became slaves, and there were very few Han people who could work as slaves. He served as an official in the court of the Yuan Dynasty, so under the rule of the Yuan Dynasty at that time, there was a lot of conflict between the Han and Mongolian people.

When Zhu Yuanzhang went on the Northern Expedition, it was actually the early stage of his business. It was also risky at this time. After all, the Yuan Dynasty was a government that had ruled the Central Plains for a century. It was definitely stronger than Zhu Yuanzhang. If Zhu Yuanzhang wanted to defeat the Yuan Dynasty, he must To win over all the anti-Yuan forces, at this time, all the Han compatriots were the ones he could win over. After all, the national sentiment was still very strong at that time. If they could be used by Zhu Yuanzhang's army, it would definitely make Zhu Yuanzhang even more powerful, so he would definitely be able to win over them. Defeated the Yuan Dynasty, so he said in his petition against the Yuan Dynasty that the Yuan Dynasty was a "Hulu beast".

Especially at the end of the Yuan Dynasty, the Yuan Dynasty was ruled by corruption. At this time, the people were in dire straits and the anti-Yuan sentiment of the Han people was rising. Zhu Yuanzhang’s message just aroused their national sentiment at this time, so it made them more Favoring Zhu Yuanzhang, who later defeated the Yuan Dynasty and laid a mass foundation.