Who was the first person to say the word "brag"

People call it bragging. The boast comes from Shaanxi, Gansu, Ningxia and Inner Mongolia. In the past, people in these places crossed the river on rafts made of sheepskin and cowhide. When in use, they blow into it, bind their mouths, and use it as a tool to cross the river, connecting small rafts together. These small rafts can be turned into big rafts and big rafts together, and can carry thousands of kilograms of heavy objects across the river.

Bragging is blowing into the raft. It seems simple, but in fact it needs skill.

In the Song Dynasty, there was a man named Yang Pu who loved to brag and claimed to be a adherent of Dongye. Song Zhenzong asked for advice, so people recommended him. There is nothing he can do. He held back a fart in front of the emperor and didn't write a poem. Song Zhenzong was embarrassed to see him. He felt sorry for his age and asked him to hand in a poem the next day.

Yang Pu stayed up all night, tossing and turning, starving many fleas. It was dawn, and when he came out of the house, he remembered the old woman's farewell letter. The next day, he provided the farewell message of the old woman: don't be poor, don't be greedy for wine glasses, and don't be crazy about poetry. I'm going to the palace today, and this time I'm going to ruin my old scalp.

After reading his poem, Song Zhenzong felt very interesting and asked him who wrote it. He admitted that this was what the old woman said when she went out. Song Zhenzong said, "For your wife's sake, let you brag this time, or you will really be scolded." .