What is the origin of "My Lord, Kong Yiji" in Lu Xun's novels?

From Lu Xun's novel Kong Yiji, only Kong Yiji was standing drinking and wearing a gown. He is very tall; Blue and white face, often with some scars between wrinkles; A shaggy gray beard. Although I am wearing a robe, it is dirty and torn. It seems that it hasn't been mended or washed for more than ten years.

He is always full of big talk when talking to people, which makes people half understand. Because his surname is Kong, others gave him a nickname, Kong Yiji, which comes from the semi-understood word "Shang Da Ren Kong Yiji" on red paper.

The novel describes the tragic image of Kong Yiji, who is pedantic and numb, listless and down-and-out, wasting his time in people's ridicule and banter, and finally being swallowed up by the feudal landlord class. It has a strong anti-feudal significance.

Extended data:

Kong Yiji's prototype:

According to legend, there was a man named "Mr. Ye Ran" in Shaoxing at that time. Because of poverty, he had to make a living by selling biscuits and fried dough sticks. Because he refused to take off his gown and shouted loudly, he had to follow other vendors selling cakes and fritters. The peddler shouted once, and he followed the low "yes", which was ironic.

When the children in the street saw him wearing a gown and carrying a basket, they all burst into laughter and called him "Mr. Ye Ran" in chorus. From then on, Mr. Wang became famous in Shaoxing. "Mr. Ye Ran" strolled slowly to Xianheng Hotel after selling fried dough sticks, ordered a bowl of wine and a plate of fennel beans, and chewed fennel beans slowly while drinking.

As soon as the children saw Mr. Ye Ran drinking and rushing for fennel beans, they gave them one by one until there were not many fennel beans left on the plate, so they covered the plate with their palms and murmured, "How many, not much ..."

Baidu Encyclopedia-Kong Yiji