Who is the protagonist in the idiom that harbors evil intentions?

Allusion

During the Spring and Autumn Period, the king of the Zheng State in the north of the Chu State wanted to marry the daughter of the minister, Duan, to the general of the Chu State, the general Gongzi Wei, to establish friendship with the Chu State through marriage. Unexpectedly, the State of Chu wanted to take advantage of the opportunity when the young master gathered in the State of Zheng to welcome his bride, and led his troops to annex the State of Zheng in one fell swoop.

On the day of the wedding, the young master gathered his chariots, led his army, and marched straight to the state of Zheng.

Zi Chan of the State of Zheng saw through the sinister intention of the State of Chu to welcome the bride, so he sent Ziyu out of the city to politely say goodbye, saying: "Our capital of the State of Zheng is very small, and there are too many of you coming to welcome the bride. It's really If you can't hold it, hold the wedding outside the city."

The representative of Gongziwei said: "The wedding is a big event, how can it be held in the wild! If you don't let us enter the city, aren't you going to call the people of the world a disaster? Do they all laugh at the fact that the status of our state of Chu is lower than that of your state of Zheng? Not only that (not Ning Weishi), but it will also make our son Wei commit the crime of deceiving his ancestors. When he left the state of Chu, he went to the ancestral temple. I respectfully pay tribute to my ancestors!"

At this time, Ziyu saw that he had reached this point, so he had to say bluntly: "Our country is small, so it is not wrong; but if it is because of It would be a big mistake for a small country to rely on a big country without taking precautions. Zheng Guo married your country of Chu and wanted to rely on your big country to protect our small country. However, you have secret intentions to seize our country. This is something we absolutely cannot tolerate!"

When the prince saw that the plot was exposed, he expected that Zheng Guoding would be prepared, so he had to give up his plan to attack Zheng Guo, but he denied that he had the intention to devour Zheng Guo and insisted on it. Entering the city, he said that all Chu soldiers were unarmed and empty-handed.

Seeing that Gongziwei had promised not to bring weapons, Zichan and Ziyu agreed to Gongziwei's request to enter the city to welcome the bride.

After the young master held the wedding ceremony in the city, he took the bride back to Chu State soon after.