At the beginning of school, my father was very busy, tutoring a student who was going to participate in the math competition for primary school students in the city. That day, it was my father's birthday. My mother and I set the table and laid the cake for his birthday. Suddenly my father stared at the bottle on the table for a while, then clapped his hands and shouted, "Yes!" " "Run away. My mother and I are both confused, just like two monks-scratching their heads and not knowing what they want. A cup of tea has passed and dad hasn't come back yet. We looked for him separately and finally found him in the study. He holds a book in one hand and a pen in the other, sometimes he looks up and thinks hard, sometimes he looks down and studies carefully, and his mouth is still mumbling ... we can't bear to disturb him. After a long time, my father finally put down his pen and said happily, "I finally figured it out!" Thank you very much for this bottle of wine! "It turns out that dad has a problem in his heart. When he saw that the cork in the bottle could not be pulled out, he could push it in so that he could pour the wine. He was inspired and finally solved the problem by reverse method. When we sat back to the table, the food was already cold. But because my father solved the problem, he had a big appetite and ate with relish, and he also poured us wine from time to time. Seeing him like this, the unhappiness in my mother and I gradually disappeared.
Dad is a complete math fan. His life is always associated with mathematics. When you go to the street, you always bring back some math books; When you walk, you will also walk at a distance; When eating, he always gives me math problems. ...
With the passage of time, my father, a math fan, changed from annoying to respectable. I also got an equation from him: "Fan" = serious!