April 22，Class 2 of the School of Electrical Engineering in 2021 held the first "Hello Watch"，Offline research and statistical work on class volunteer services for "Do Good Every Journey"，Led by monitor Wang Yingshuo，All students from the research group and statistics group of Class 2 participated in the activity。

Before the event，Wang Yingshuo held an offline mobilization meeting，Arrangements for activities、Collection of research materials、Detailed explanation of event precautions and other aspects，Ensure activities are carried out efficiently and orderly。

Active，The research team conducted a survey on the north and south sides of Block E of the teaching building according to the task assignment、East side of the laboratory building、Carry out centralized investigation on the vehicles at the moped parking spots such as the north gate of the campus，Vehicles are initially divided into two categories: faulty vehicles and intact vehicles，Further classification of fault conditions of faulty vehicles，Such as car body failure、Part defective、Brake failure, etc.，And collect vehicle failure data by taking photos with mobile phones and send them to the statistics team for further analysis。At the same time，Under investigation，Students from the investigation team cleaned up Hello bikes based on the contamination on the body，And actively collect students’ riding experience，Complete statistics on vehicles with problems reported by students。

After the end of offline research，The statistics team uses programming methods to identify and analyze the image data of the research team，Summarize and sort the collected vehicle information according to the number of occurrences of vehicle problems and the severity of vehicle problems，Analyze the proportion of vehicle problems and the main distribution of damaged vehicles，And make preliminary plans and adjustments for the second offline survey based on the data of this survey。

This survey and statistics volunteer service activity involves inspecting vehicles and reporting for repair，Guarantee the safe travel of teachers and students on this campus。At the same time，This activity helps cultivate students’ awareness of caring for public property，Laid a good foundation for creating a civilized campus。