This work is set in 2003, when telephone lines had just been installed in rural areas. Telephones were not yet widespread, and there were only a few in a village. As for mobile phones, they are even more of a luxury product and are basically out of reach of students. Therefore, there are basically no electronic products for information exchange in this book. In addition, students at that time were relatively conservative in their thinking, and dating was limited to dates, and the most they held hands was hugging and kissing. It is incomparable to modern love and sexual synchrony.