The fat man suddenly thought of Kong Yiji, except that Kong Yiji always drank standing up, while he felt particularly uncomfortable sitting down. There were two trees outside the window, one was a maidenhair tree, and the other was also a maidenhair tree.
The fat man was lost in thought when he suddenly saw Qingxing walking back with an abacus slung over her shoulder. Someone was chasing after her, calling out, "Miss Qingxing, could you please recite that formula again?" So Qingxing stopped and explained it to him again in detail. The fat man looked at them, one "eager to learn" and the other "eager to teach," and felt a surge of satisfaction. He then suddenly remembered Li Tianyi, who had pestered Qingxing to teach him arithmetic on the way to Qi County last year.
After Qingxing finishe
