It's another summer vacation. In many rural areas, the annual summer "big drama" - the "mobile phone competition" - is being repeated. Every weekday, Li Ping (not his real name), who lives in a village in Rudong County, Jiangsu Province, takes a large package of electronic products - tablet computers, laptops, two mobile phones, telephone watches, etc. - to work in the factory. She installed a camera at home to control her son's every move in real time. But recently, she found that the camera is often obscured by curtains for most of the lens. The son's response to this is: "I accidentally bumped into it while pulling the curtains." There are many families in the village who are struggling with electronic products such as smartphones. Some children live with their grandparents, and while the elderly person is sleeping, the child secretly flips out their phone and "swipes" at the elderly person's face, and the phone is immediately unlocked; Some children sit in front of their old-fashioned desktop computers at home and play games whenever they have the opportunity; Some children falsely claimed to go to their classmates' homes to play, while others plunged into rural internet cafes. Zhang Tian (pseudonym)'s daughter is attending junior high school in a rural area. During the summer vacation, she enrolled her daughter in 5 classes in the town, with 3 classes per day. "The school teachers assigned a lot of homework, and with these training classes, it can almost fill two months. A reporter from China Youth Daily/China Youth Network noticed that during the summer vacation, various training programs have reached the township level in rural areas of some economically developed provinces, and children can still compete with mobile phones. But in some economically underdeveloped provinces, whether children in rural areas continue to stay in the countryside or follow their parents into cities, many people will "get stuck" in mobile short videos and online games. From "confiscating mobile phones" to "mobile phone freedom", "managing students' mobile phone usage is a more headache than academic guidance in rural middle schools." Teacher Xin is the homeroom teacher of a middle school graduation class at a rural boarding school in central Jiangxi. She spent a lot of time researching 'how to take a phone out of a child's hand'. With the arrival of summer, the "mobile phone competition" will once again take place in rural areas. Teacher Xin is worried that the phone he managed to control will return to the child's hands, and from then on, there will be a situation where the phone loses control. In the rural areas of Ganzhong, Teacher Xin is one of the few people who understands "mobile phone management". She introduced that "confiscating mobile phones" is a common management measure in rural schools, and there are always several students in her class who often carry their phones. "Parents are not very concerned, and some students even have more than one phone. At most, the phones I confiscate can fill half a drawer. The drawer where Teacher Xin keeps her phone is not locked. The dilemma she often encounters is that as soon as she confiscates her phone in the front, the students in the back will go to the office and secretly take it back. When students are discovered using their phones again, they will be confiscated by the teacher. This kind of "mobile phone competition tug of war" is happening in almost every class. On campus, students are unable to obtain their phones despite frequent security checks by teachers and security guards. Teacher Xin dare not imagine: how can children without teacher supervision live under the condition of "mobile phone freedom" during summer vacation? Xiaoyu (not his real name), a junior one student in the school, is a typical Left-behind children in China. He usually fights wits with his grandparents for mobile phones and follows them in summer vacation