Why did Su Qin say that Su Qinjing's wine was "sour wine" on his father's birthday?

Because Su Qin was down and out at that time, his brothers and sisters-in-law, including his father, looked down on him very much, and even the wine he touched with his hands would be repugnantly described as "sour wine".

Su Qin, a famous strategist and strategist in the Warring States period, had a long period of poverty before he became famous. Su Qin's family has been farming for generations, and Su Qin, who has been ambitious since childhood, is not willing to be a mediocre person all his life, and he is bent on making a big career.

So after studying in Guiguzi, I traveled around the world with great ambition, looking for a suitable opportunity to make my talents useful. It's a pity that Su Qin has traveled all over the world, but no one respects him, and no one is willing to reuse him. Su Qin, who has met with a rebuff, can only return to his hometown despondently.

The wife, brother and sister-in-law and father at home are extremely indifferent when they see him. When they see him hungry, they don't say anything about cooking for him. When they see him in rags, they don't say anything about mending him. Their eyes are full of contempt and disdain. Later, on Su Qin's father's birthday, eldest brother offered a glass of wine, and his father said happily that the wine was really sweet. Su Qin then offered a toast to the same kind of wine, but his father said sour wine with disgust!

Su Qin was hit hard, so he studied harder and studied politics, and soon began to travel around the world for the second time. This time, Su Qin finally got the reuse of the six countries by virtue of the combination of vertical and horizontal, and realized his ideal ambition. After he returned home dressed in rags, his brother, sister-in-law and father, who looked down upon him in the past, were all passive Nuo Nuo, with a flattering face, and their attitude was a far cry from before, which made Su Qin feel deeply.

It seems that no matter when, human nature will not change. The world is cold, and your family may step on you when you are at a low ebb.