The class time is up, please ask the teachers and classmates to return to the classroom and prepare for class. As the pleasant class bell rang, the noisy class was quieter a little. The classmates who gathered together in groups of three or three returned to their seats reluctantly, talking loudly about last night's TV series and games. I raised my head, rubbed my sleepy eyes, gently stretched out my arms, symbolically took out the math textbook door and pushed it open. The girl who walked into the door looked very young, not tall, looked about 1.6 meters tall, with a slender figure. She was wearing a white dress without makeup, with a small and delicate face, and a hint of unconcealed tension on her face.