The Shadow of the Sycamore Tree Scratched by the Pen Tip

The shadow of the phoenix tree under the pen tip When the wind in September lifts the classroom curtains, Lin Xiaoman always gets stuck on the last question of the math paper, until Jiang Xu at the front desk hands over a piece of draft paper filled with auxiliary lines. The moment his fingertips touch, the cicadas sing softly. From then on, her wrong question became a hidden secret. Jiang Xu's problem-solving tips written in red pen were always decorated with small smiling faces; she secretly inserted dried sycamore leaves or orange candies wrapped in candy wrappers. Every time she handed out the book, she had to hold the corners of her clothes to muster up courage. After the monthly exam, Jiang Xu gave her a metal bookmark engraved with sycamore leaves, and also handed her a new notebook - on the first page, there were two little figures doing the questions side by side, and the agreement to "solve the next question together" was hidden between the lines. On the day of the sycamore leaf exhibition, the two walked through the "Wu Tong Tunnel" stepping on fallen leaves. When Jiang Xu helped her take pictures, a leaf happened to fall on the wrong question book. On the bench by the lake, Lin Xiaoman discovered that there was an extra line of small words in the book: "The first time I lectured on the topic, I practiced the auxiliary lines three times." Jiang Xu opened the exercise book, and every candy wrapper she gave was neatly sandwiched in it. Under the setting sun, Jiang Xu handed her a sycamore leaf with the words "Go to the library to write questions" written on it. The wind was filled with the fragrance of grass and trees. After all, this wrong-question book is not full of problems, but it is full of the sweetest time in youth - the tacit understanding of solving problems side by side, the thoughts hidden in the pages, and the warm future of two people slowly walking out under the sycamore tree.